Fix DREAMING->AOD animation

If the device enters DREAMING and the user hits the power
button, we transition to AOD state. Make sure to fade in
lockscreen content.

Fixes: 329378373
Test: atest KeyguardRootViewModelTest
Flag: com.android.systemui.migrate_clocks_to_blueprint
Change-Id: I6b15cc7c4b6cc42bce794895298afa804296fe0f
4 files changed