Delay the dozeAmount change animation.

This change builds on the previous refactor to introduce an animated delay.  This delay animation is carefully crafted to avoid accidentally affecting doze amount state in any situation other than while the animation is running, without ever having to cancel the animation.

Bug: 269085199
Test: atest NotificationWakeUpCoordinatorTest NotificationWakeUpCoordinatorLoggerTest
Change-Id: I5946c59159f04b07c4a56e862e4b0ecc575849ce