Merge "Cancel the stash animation if the stash controller is destroyed before then" into main

     * Clean up on destroy from TaskbarControllers

     */

    public void onDestroy() {

        // If the controller is destroyed before the animation finishes, we cancel the animation

        // so that we don't finish the CUJ.

        if (mAnimator != null) {

            mAnimator.cancel();

            mAnimator = null;

        }

        UI_HELPER_EXECUTOR.execute(

                () -> mAccessibilityManager.unregisterSystemAction(SYSTEM_ACTION_ID_TASKBAR));

    }