Enable biometric support to unlock profiles

This change ensures the ConfirmCredentialActivity allows biometric
authentication to unlock (or disable quiet mode for) a profile if
the profile storage is unlocked when in quiet mode.

Test: atest SettingsRoboTest
Bug: 312184187
Change-Id: Iefcebf2f93403591a1a4c50ff5da8d6055a37b03