Merge "Clean up PLUG_IN_STATUS_BAR_CHIP flag" into main

.../com/android/systemui/dagger/ReferenceSystemUIModule.java

...temUI/src/com/android/systemui/dagger/SystemUIModule.java

packages/SystemUI/src/com/android/systemui/flags/Flags.kt

...ndroid/systemui/statusbar/events/StatusBarEventsModule.kt

...ui/statusbar/events/SystemEventChipAnimationController.kt

...droid/systemui/statusbar/events/SystemEventCoordinator.kt

...tusbar/events/SystemStatusAnimationSchedulerLegacyImpl.kt

...tatusbar/events/SystemEventChipAnimationControllerTest.kt

...d/systemui/statusbar/events/SystemEventCoordinatorTest.kt

...tatusbar/events/SystemStatusAnimationSchedulerImplTest.kt