Fix scrims not updating after waking up

Being pulsing has nothing to do with having pulsing notifications.
A pulse might be triggered by a passive interrupt or by a broadcast
for example.

Test: double tap scrims when pulsing
Test: atest tests/src/com/android/systemui/statusbar/phone/StatusBarTest.java
Fixes: 119527622
Change-Id: Iadff7831392ed955f319f0e195fcdca18509553f