Fix regression where recents button had no animation

Change-Id: I76102b4a9f3581b71285bfa9aa0c9dc29dd3165d
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
index 9dce984..e182c59 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
@@ -117,6 +117,7 @@
         });
         if (mActivity == null) {
             Log.e(TAG, "Animation created, before activity");
+            anim.play(ValueAnimator.ofInt(0, 1).setDuration(RECENTS_LAUNCH_DURATION));
             return anim;
         }
 
@@ -135,6 +136,7 @@
         RemoteAnimationTargetCompat runningTaskTarget = targets.findTask(mTargetTaskId);
         if (runningTaskTarget == null) {
             Log.e(TAG, "No closing app");
+            anim.play(ValueAnimator.ofInt(0, 1).setDuration(RECENTS_LAUNCH_DURATION));
             return anim;
         }
 
@@ -181,6 +183,7 @@
                 transaction.apply();
             });
         }
+        anim.play(valueAnimator);
         return anim;
     }