* fix(profile): detect attempt to use banned words as display name. refactor profanity detection method.
* fix(profile): detect attempt to use banned words in blurb. further refactor profanity detection. inform the user their chat privileges have been revoked.
* refactor: add function to normalize Unicode strings and remove diacritics
* fix: improve regEx to prevent false partial matches e.g. 'hello' being recognised as banned words. porting fix from #12309
* fix(profile): refactor of profanity detection for #12445
* fix(profile): add test for swear words in new profile. fix existing tests
* fix(profile): show different error message for attempted slur use in username by new users.
* fix(profile): remove incorrect slur test
* fix(profile): fix slurs not caught at start of end of strings connect by punctuation
* tests(profile): fix tests for profanity checking
* remove exclusive test
* 11865 - update text for slur warnings
* 11865 - remove unused string from locale files
* 11865 - improve naming of banned word usage locale string
* 11865 - improve logic so that differentiated warnings are shown depending on whether a slur or other profanity has been used in a display name
* 11865 - construct slur regexes outside the validation function in which they are used
* 11865 - fix tests
