This is a follow-up to T362924: Special:EditEventRegistration should work the same as Special:EnableEventRegistration
Acceptance criteria
- Given an organizer has enabled registration for an event
- When an the registration information has been successfully updated on Special:EditEventRegistration
- Then the user should be redirected to the Event page
- And they should see a success message in a bubble notification
- They success message text should be: "The registration information has been updated."
- And in a new line in the same bubble notification, they should see:
- "This event is included in the Collaboration List."
- Collaboration List should be bold
- Collaboration List should link to Special:AllEvents on wiki that the user is on
- "This event is included in the Collaboration List."
- And if there are any warnings, they should be displayed in separate bubble notifications

