Merge changes from topics "UserInteractor", "currentuser2", "currentuser5", "currentuser6" into main
* changes:
Flip feature flag REFACTOR_GETCURRENTUSER
Add feature flag REFACTOR_GETCURRENTUSER
Refactor getCurrentUser out of KeyguardViewMediator
Refactor now resolved classes away from getCurrentUser()
Refactor KeyguardUpdateMonitor internal references
Refactor DozeParameters and BiometricsUnlockController out of Repository
Refactor out KeyguardUpdateMonitor.getCurrentUser() 2/X
Refactor UserInteractor to UserSwitcherInteractor