Fix state/anim clobbering when touching down during recents animation

Addresses 2 problems:
- Set mLauncherTransitionController = null after ending it, to prevent a
  subsequent end from re-setting OVERVIEW state.
- Cancel the shelf animation so that it doesn't clobber the animation to
  all apps (for instance).

Bug: 134309036
Bug: 134309189
Change-Id: I019084a1ba38c6208a6256843cb5c4b6dbb4a662
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/WindowTransformSwipeHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/WindowTransformSwipeHandler.java
index 7d17f85..edeae81 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/WindowTransformSwipeHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/WindowTransformSwipeHandler.java
@@ -868,9 +868,7 @@
     @UiThread
     private InputConsumer createNewInputProxyHandler() {
         endRunningWindowAnim();
-        if (mLauncherTransitionController != null) {
-            mLauncherTransitionController.getAnimationPlayer().end();
-        }
+        endLauncherTransitionController();
         if (!ENABLE_QUICKSTEP_LIVE_TILE.get()) {
             // Hide the task view, if not already hidden
             setTargetAlphaProvider(WindowTransformSwipeHandler::getHiddenTargetAlpha);
@@ -1312,6 +1310,7 @@
     }
 
     private void endLauncherTransitionController() {
+        setShelfState(ShelfAnimState.CANCEL, LINEAR, 0);
         if (mLauncherTransitionController != null) {
             mLauncherTransitionController.getAnimationPlayer().end();
             mLauncherTransitionController = null;