Implement view to handle authenticator-related users with correct permission class, returning 200 for superuser, 403 for normal user and 401 for unauthenticated user
If given a bad authenticator pk, return 404
Include checks for authenticator existence and return 404 if not found
Add unit tests for authenticator-related users list and authenticator with bad pk
=> This PR resolves APP-25719
superuser
, 403 fornormal user
and 401 forunauthenticated user