Add restart button for size compatibility mode activity

- The floating restart button will show when an size compatibility
  mode activity shown with non-native screen configuration. e.g.
  display size changed, move to another display.
- Consolidate onDisplayRemoved into CommandQueue.Callback so the
  components which implement CommandQueue.Callbacks don't need to
  register display listener individually. The leakage of
  AutoHideController when removing display is also fixed by the way.

Bug: 112288258
Test: runtest systemui -c \
      com.android.systemui.SizeCompatModeActivityControllerTest

Change-Id: Ib04efe983ae0d8d21b33fb9fd9c60e7f6f0dc92e