Defer onIsStashedChanged() until all controllers are initialized

Test: N/A
Fixes: 230133882
Change-Id: I27df993a08327d28669963e3cecfaa133daf11c9
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
index f1a226f..f34759d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
@@ -502,8 +502,10 @@
     }
 
     private void onIsStashedChanged(boolean isStashed) {
-        mControllers.stashedHandleViewController.onIsStashedChanged(isStashed);
-        mControllers.taskbarInsetsController.onTaskbarWindowHeightOrInsetsChanged();
+        mControllers.runAfterInit(() -> {
+            mControllers.stashedHandleViewController.onIsStashedChanged(isStashed);
+            mControllers.taskbarInsetsController.onTaskbarWindowHeightOrInsetsChanged();
+        });
     }
 
     public void applyState() {