Only allow one TaskbarRecentsAnimationsListener at a time.

If another animation is created while one is occurring, we should clean
up the previous one.

Test: Manual
Fix: 233868461
Change-Id: Idf0e33ae95cbf19741ee943e450d478b1e18716b
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
index ea5df87..d790b4b 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
@@ -186,6 +186,10 @@
         animatorSet.play(stashController.applyStateWithoutStart(duration));
         animatorSet.play(applyState(duration, false));
 
+        if (mTaskBarRecentsAnimationListener != null) {
+            mTaskBarRecentsAnimationListener.endGestureStateOverride(
+                    !mLauncher.isInState(LauncherState.OVERVIEW));
+        }
         mTaskBarRecentsAnimationListener = new TaskBarRecentsAnimationListener(callbacks);
         callbacks.addListener(mTaskBarRecentsAnimationListener);
         ((RecentsView) mLauncher.getOverviewPanel()).setTaskLaunchListener(() ->