test: adde ball assets to forest tests

test/game/components/flutter_forest/behaviors/flutter_forest_bonus_behavior_test.dart

@@ -18,15 +18,15 @@ class _MockGameBloc extends Mock implements GameBloc {}
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('FlutterForestBonusBehavior', () {
+    late GameBloc gameBloc;
     final assets = [
+      Assets.images.dash.animatronic.keyName,
       theme.Assets.images.dash.ball.keyName,
       theme.Assets.images.dash.ball.keyName,
     ];
 
-  group('FlutterForestBonusBehavior', () {
-    late GameBloc gameBloc;
-    final assets = [Assets.images.dash.animatronic.keyName];
-
     setUp(() {
       gameBloc = _MockGameBloc();
       whenListen(