Deprecate ShadeFoldAnimator and ShadeViewStateProvider

These two interfaces are made redundant by migrateClocksToBlueprint and migrate_keyguard_status_bar_view flags, respectively. Since both are prereqs for Flexiglass, these are effectively dead. There is a single usage of ShadeFoldAnimator.view whose side effect may or may not need to be preserved - this will be added to the shade integration doc. The other remaining usage of view was able to be cleaned up.

Bug: 303267342
Test: existing tests
Test: manually verified isDozing value is the same when folding + locking device.
Flag: ACONFIG com.android.systemui.scene_container DEVELOPMENT
Change-Id: Iacd8f23265e00d4df41c7ab1c9eb6cb650160dd7