Do not animate scrim when ColorFade

AOD scrims should only animate when sysui will control the screen-off
transition.

Test: manual
Test: atest packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/ScrimControllerTest.java
Bug: 77539750
Change-Id: Iba79ea09c149068e75163fabddd3608254dd83f3