Based on T399086: Mentorship interface throwing errors
Steps to replicate the issue:
- an admin testwiki wmf.9 changes any message on MediaWiki:GrowthMentors.json to be over 240 allowed character count
What happens?:
- no user can enroll (via Special:EnrollAsMentor" - the error message: "Introduction message is too long..." for any number of characters typed in the intro text field
- no mentor can quit - the message "Introduction message is too long..." seems confusing since there is not field with such name at all
- and admin cannot edit mentors on Special:ManageMentors - the message "Introduction message is too long..." appears upon saving edits to "Number of newcomers assigned" or to the "Away" status.
What should have happened instead?:
- MediaWiki:GrowthMentors.json should not allow to save invalid edits
