Fix Color Clock on AOD

When region sampling text protection was enabled, AOD clock was changing
from white clock to lockscreen's colored clock because
animateAppearOnLockscreen() was being triggered by
onRegionDarknessChanged(). To remedy this, we now ensure that
animateAppearOnLockscreen() cannot be called when animation doze state
is active (AOD mode). Since animateDoze() already handles the clock
color change when going from lockscreen to AOD mode, there is no need
for animateAppearOnLockscreen() to be called since the clock color
never changes in AOD mode.

Test: atest test_aodClock_always_whiteColor
Fixes: 258852242
Change-Id: I45484db37c7a728b1c71eacd8c162b580e59f820