Merge "Control stash handle visibility directly" into main

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleStashedHandleViewController.java

@@ -85,7 +85,6 @@ public class BubbleStashedHandleViewController {
         mActivity = activity;
         mStashedHandleView = stashedHandleView;
         mStashedHandleAlpha = new MultiValueAlpha(mStashedHandleView, 1);
-        mStashedHandleAlpha.setUpdateVisibility(true);
     }
 
     /** Initialize controller. */

quickstep/src/com/android/launcher3/taskbar/bubbles/stashing/TransientBubbleStashController.kt

@@ -556,6 +556,7 @@ class TransientBubbleStashController(
     ) {
         if (bubbleBarViewController.isHiddenForNoBubbles) {
             // If there are no bubbles the bar and handle are invisible, nothing to do here.
+            cancelAnimation()
             return
         }
         val isStashed = stash && !isBubblesShowingOnHome && !isBubblesShowingOnOverview