[6/n] Camera Compat UI: Dispatch pending events in task organiser to ensure state update in UI.

Without this change, Task#dispatchTaskInfoChangedIfNeeded led to a pending task event being added in TaskOrganizerController#onTaskInfoChanged but not dispatched which sometimes resulted in the stale state for the camera compat control.

Test: manual - no stale state.
Bug: 214429446
Change-Id: Ief8891b938ec6116fd3adbc260d3457817ba2e02

services/core/java/com/android/server/wm/ActivityRecord.java

@@ -1623,6 +1623,11 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         }
         // Trigger TaskInfoChanged to update the camera compat UI.
         getTask().dispatchTaskInfoChangedIfNeeded(true /* force */);
+        // TaskOrganizerController#onTaskInfoChanged adds pending task events to the queue waiting
+        // for the surface placement to be ready. So need to trigger surface placement to dispatch
+        // events to avoid stale state for the camera compat control.
+        getDisplayContent().setLayoutNeeded();
+        mWmService.mWindowPlacerLocked.performSurfacePlacement();
     }
 
     void updateCameraCompatStateFromUser(@CameraCompatControlState int state) {