This is an accompanying task of:
https://phabricator.wikimedia.org/T333601

Solution 1:

• Copy needed CSS/Js of the component over from ooui.
• Server side rendering of a drop in replacement for OOUI popup
• Using toggle of show/hide (display: none/default) with mw.msg() for the message key to replace inner text

Solution 2:

• Load OOUI after pageload (nonblocking)
• once it is loaded we create and show the appropriate messages

QA Results - Beta

QA Results - Prod