New Code Changes have been implemented (Per the Acceptance Criteria), and verified.

New Code Changes for 10 minute short-term rate limit has been implemented and verified, and the existing code for maximum of 6 temporary account creations per day is still intact.

@Niharika
New Code Changes have been implemented, and verified.

New Code Changes have been implemented and verified (Abuse Filter Log will reveal the IP Address when Show IP button is selected).

Great work on the fix, @hector.arroyo:

New Code Changes have been implemented and verified (Per the Acceptance Criteria)...

New Code Changes have been implemented and verified (Special:GlobalRenameQueue/request: If user leaves Notes/reasoning field blank, then select Reject Vanishing, the user will be presented with an error message A reason must be provided for rejected vanish requests)...

QA was completed for this ticket using LocalHost: Mediawiki 1.45.0-alpha (0713c73)...

New Code Changes have been implemented and verified Per the Requirements in the ticket Description...

@hector.arroyo:
I am noticing that for any special pages with more than one "Show IP" button for the same expired temporary account, when the user selects one of the "Show IP" buttons it will display no longer available for the "Show IP" button that was selected, but the remaining "Show IP" buttons will display unavailable.

New Code Changes have been implemented, and verified (UserInfocard now displays the globally blocked verbiage or globally locked verbiage for active global blocks or active global locks)
QA was completed for this ticket using LocalHost: Mediawiki1.45.0-alpha / CheckUser 2.5 (6d1cd2d).
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

New Code Changes have been implemented, and verified (UserInfocard: Joined date/time should always be in the past).
QA was completed for this ticket using LocalHost: Mediawiki1.45.0-alpha / CheckUser 2.5 (dc76dd4).
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

New Code Changes have been implemented, and verified per the Acceptance Criteria:
QA was completed for this ticket using LocalHost: Mediawiki1.45.0-alpha / CheckUser 2.5 (e561217).
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

New Code Changes have been implemented Per the Acceptance Criteria:

New Code Changes have been implemented (Thanks received or given now shows 1000+ if count is 1000 or more).

New Code Changes have been implemented (excluding the Acceptance Criteria for State of the checkbox (checked/unchecked) is remembered if the user leaves the page and comes back to it at a future point. (Optional, nice-to-have), this specific criteria will not be apart of this ticket):

New Code Changes have been implemented (UserInfoCard: Global Edits Count matches CentralAuth & Xtools):
QA was completed for this ticket using Mediawiki 1.45.0-wmf.12 (4f0e620)
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

I am still seeing duplicate UserInfoCard icons for the same user especially when I view the WatchList page.
Since Kosta is out of office this week I am pushing this back to Ready so another engineer can take a look at it.

New Code Changes have been implemented (When user opens a UserInfoCard, the Username will not be underlined unless the user does a mouse-over the Username):
QA was completed for this ticket using Patch Demo...
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

New Code Changes have been implemented (Browser Jumping of UserInfoCard is no longer occurring)
QA was completed for this ticket using Test wiki 1.45.0-wmf.12 (4f0e620)
Testing was performed on various: Skins, Desktop View/MobileView, Chrome/Edge/Firefox/Safari, Windows/Mac/Android/iOS, RTL languages

The new code has been implemented and is functioning as expected (The message Showing results from the last 90 days, for all wikis where you have the right to view contributions. will only be shown when IPs or IP ranges are the input... Also the message Showing results from the last 90 days, for all wikis. will only be shown when a temporary or registered account name is the input.).

The new code has been implemented and is functioning as expected (The tooltip will only show "Temporary account has expired" if it has actually expired).
QA was completed for this ticket using Mediawiki 1.45.0-wmf.11 (3f4355c)

The new code has been implemented and is functioning as expected (Temporary Accounts are not broken into 2 halves).
QA was completed for this ticket using LocalHost: Mediawiki1.45.0-alpha (a10c31d)

The new code has been implemented and is functioning as expected (Selecting Show IP on the Special:Contributions page, will reveal the IP Address instead of the error message).
QA was completed for this ticket using LocalHost: Mediawiki 1.45.0-alpha (a10c31d)

QA is completed...
The new code has been implemented and is working as expected per the Acceptance Criteria.

QA is completed...
The new code has been implemented and is working as expected per the Acceptance Criteria.

QA is completed...
The new code has been implemented and is working as expected per the Acceptance Criteria.

I have verified that the code changes have been reverted (User-related link colors have been removed).
QA was completed for this ticket using Test wiki 1.45.0-wmf.9 (a9e4ca5) and 1.45.0-wmf.10 (06dce30), and localhost 1.45.0-alpha (1ba8f04).
Thank you @Tchanders.

In reference to @KColeman-WMF comments:

It looks like the baseline of the username text (on first line) isn't aligning with the baseline of the icon, and when it's a long username across two lines that difference becomes more pronounced.

The new code has been implemented and is working as expected per the Acceptance Criteria.
QA was completed for this ticket using Test wiki 1.45.0-wmf.9 (a9e4ca5)

The new code has been implemented and is functioning as expected (IP Info button is displaying for each temporary account).
QA was completed for this ticket using LocalHost: IP Info 0.0.0 (f750ead)

The new code has been implemented and is functioning as expected (Show IP only appears once for each temporary account line).
QA was completed for this ticket using LocalHost: CheckUser 2.5 (50d2a8a)

The new code has been implemented and is functioning as expected (UserInfoCard: Graph and "editing activity" text are contained within popover area).
QA was completed for this ticket using Test wiki 1.45.0-wmf.9 (a9e4ca5)

The new code has been implemented and is working as expected per the Acceptance Criteria, also the Temporary account IP reveal preference message has been updated with the new verbiage Other users with access to temporary account IPs can view the status of this preference .

The new code has been implemented and is functioning as expected (WatchList message for adding/removing will display as: User:{Username} and its discussion page).
QA was completed for this ticket using Test wiki 1.45.0-wmf.8 (103cda9), thanks again @Tacsipacsi.

@Tacsipacsi
Thank you for the information and the steps to reproduce...
I will retest this ticket.

QA is completed:
The new code has been implemented and is working as expected per the Acceptance Criteria, thank you @hector.arroyo

QA is completed:
The new code has been implemented (UserInfoCard: User Page link will be blue if page exist).

@KColeman-WMF:
I am currently testing the implemented code changes for this ticket on test.wikipedia 1.45.0-wmf.8 (103cda9), and below is a screenshot of the UserInfoCard with a long username...

@KColeman-WMF:
I am currently testing the implemented code changes for this ticket on test.wikipedia 1.45.0-wmf.8 (103cda9), and below are Before and After sceenshots...

@KColeman-WMF:
I am currently testing this ticket on test.wikpedia.org with release of MediaWiki 1.45.0-wmf.8 (103cda9)
When I look at the ticket Description, it says that What should have happened instead when adding or removing a user from watchlist?
The message should say {Username} and their discussion page...

The new code has been implemented and is functioning as expected (Line Breaks have been removed from UserInfoCard on mobile devices in Minerva/Mobile view).
QA was completed for this ticket using Test wiki 1.45.0-wmf.7 (bb73cc3)

The new code has been implemented and is functioning as expected (Multiple clicks to open or close or reopen UserInfoCard have been removed).
QA was completed for this ticket using Test wiki 1.45.0-wmf.7 (bb73cc3)

UserInfoCard (Thanks links):
Link for Thanks received will redirect user to (Special:Log?type=thanks&user=&page=username)
Link for Thanks given will redirect user to (Special:Log?type=thanks&user=user)
QA was completed for this ticket using Test wiki 1.45.0-wmf.7 (bb73cc3)

QA regression testing is completed:
The existing functionality has not been changed after the new code changes were implemented (Checkuser is still working as expected).

QA is completed: The new code has been implemented and is functioning as expected (Per the ticket description).

QA is completed: The new code has been implemented and is functioning as expected (Per the Acceptance Criteria).

QA completed for this ticket using Test wiki 1.45.0-wmf.7 (bb73cc3):
The new code has been implemented and is functioning as expected (Per the Acceptance Criteria).

Using Beta wiki and Localhost for testing:
QA is completed, I have verified the new code has been implemented and is functioning as expected.

Using Localhost for testing:
QA is completed, I have verified the new code has been implemented and is functioning as expected (Per the Acceptance Criteria).

Using Localhost for testing:
QA is completed, I have verified the new code has been implemented and is functioning as expected (Per the Acceptance Criteria)... Thank you @Tchanders.

QA is completed, I have verified the new code has been implemented and is functioning as expected (Per the Acceptance Criteria).

QA is completed, I have verified the new code changes have been implemented and are functioning as expected (per the Acceptance Criteria).

QA is completed:
I have verified the new code changes have been implemented and are functioning as expected (When the UserInfoCard is enabled or disabled: The Special:GlobalContributions page is returning global contributions results without internal errors).

Hi @kostajh:
While testing this ticket, I am noticing the IP Auto-reveal icon is just a dark square (see screenshot)...
I have tried this with testwiki, my localhost and patch demo, and getting the same dark square icon for IP Auto-reveal.

QA is completed: The new code changes have been verified and are functioning as expected (verbiage regarding email and preferences have been removed from notifications for temporary accounts that are GlobalBlocked).

Moved this ticket back to QA for retesting after wmf.6 is rolled out.

QA is completed, the issue that's listed in the ticket Description is no longer occuring (I am not able to reproduce the issue)... The Special:GlobalContributions page is returning global contributions results without internal errors.

QA is completed, I have verified the new code changes have been implemented and are functioning as expected (per the Acceptance Criteria)...
Thank you @Tchanders and @Dreamy_Jazz.

The new code changes have been verified and are functioning as expected (The disable this feature link is not displaying when IPInfo is not a Beta Feature).

Using localhost for testing:
The new code changes have been verified and are functioning as expected (3rd step verbiage has been updated)... Thank you @Tchanders and @Dreamy_Jazz.

During my testing of this ticket:
I am not seeing the correct verbiage for the New Step Content per the ticket Description, the verbiage in the ticket Description shows as:

The new code changes have been verified and are functioning as expected (Per the Acceptance Criteria).

The new code changes have been verified and are functioning as expected (Per the Acceptance Criteria).

The new code changes have been verified and are functioning as expected (Special:GlobalContributions/<ip>: The entry that's hidden shows '(no username available)' only once instead of twice).