Use PropertyAnimator for CUJ_SCREEN_OFF_SHOW_AOD

Previously ViewPropertyAnimator - e.g. View.animate() - and
PropertyAnimator were used at the same time for animations on the same
keyguard view. This made the state less predictable since one might
assume calling View.animate().cancel() would cancel all the
PropertyAnimators too (it does not). Since ViewPropertyAnimator was only
used for animating alpha, simplify things by removing usage of
View.animate() and replacing it with a new PropertyAnimator call for the
View.ALPHA property.

Also,

 - Mark KeyguardUserSwitcherController as deprecated

 - Throw IllegalArgumentException if KeyguardStatusView#animate() is
   called on a debuggable build

Test: capture perfetto trace while turning screen off
Test: turn screen off while on lock screen, observe that the fade
      and translation animations remain unchanged
from home screen
Bug: 262705829

Change-Id: I72d8f3986422e3c71a6f91b94e5692e929867737