Set "usingRemoteAnim" for fallback recents

Ensure fallback recents uses the correct layout animation by hooking
into usingRemoteAnim API.

Bug: 132112131
Test: Manual test
Change-Id: I9bb96dbf436018e5488ede0c5ca48af787180aec

go/quickstep/src/com/android/quickstep/FallbackActivityControllerHelper.java

@@ -45,12 +45,12 @@ public final class FallbackActivityControllerHelper extends
     @Override
     public AnimationFactory prepareRecentsUI(RecentsActivity activity, boolean activityVisible,
             boolean animateActivity, Consumer<AnimatorPlaybackController> callback) {
-        // TODO: Logic for setting remote animation
         if (activityVisible) {
             return (transitionLength) -> { };
         }
 
         IconRecentsView rv = activity.getOverviewPanel();
+        rv.setUsingRemoteAnimation(true);
         rv.setAlpha(0);
 
         return new AnimationFactory() {