Merge changes from topics "UserInteractor", "currentuser2", "currentuser5",...

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