auth.accessTokens UI experience changed

Created by: uwedeportivo

this is from test grid item 8.4.1:

test plan: https://docs.google.com/document/d/1B9bFwg1dx5qRJbrL0CEwZCv3eEanN2yHYJvcAPpaCR8/edit#heading=h.etllq...

it works but not exactly as described

non-admin user still gets the "Access token" UI even if access tokens have been turned off for non-admin users. the creation itself is prevented though