Fix missing check that scene is loaded in animated_fox example.

examples/animated_fox.rs

@@ -83,6 +83,7 @@ fn setup_scene_once_loaded(
         if let (Ok(scene), Ok(mut player)) =
             (scene_query.get_single(), player_query.get_single_mut())
         {
+            if scene_manager.instance_is_ready(**scene) {
                 for entity in scene_manager.iter_instance_entities(**scene) {
                     commands.entity(entity).insert(OutlineBundle {
                         outline: OutlineVolume {
@@ -97,4 +98,5 @@ fn setup_scene_once_loaded(
                 *done = true;
             }
         }
+    }
 }