refactor: plunger assets preload

lib/game/game_assets.dart

@@ -42,6 +42,7 @@ extension PinballGameAssetsX on PinballGame {
       images.load(components.Assets.images.spaceship.rail.foreground.keyName),
       images.load(components.Assets.images.chromeDino.mouth.keyName),
       images.load(components.Assets.images.chromeDino.head.keyName),
+      images.load(components.Assets.images.plunger.plunger.keyName),
       images.load(Assets.images.components.background.path),
     ]);
   }

packages/pinball_components/lib/src/components/plunger.dart

@@ -1,8 +1,7 @@
 import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:flutter/services.dart';
-import 'package:pinball_components/gen/assets.gen.dart';
-import 'package:pinball_components/pinball_components.dart' hide Assets;
+import 'package:pinball_components/pinball_components.dart';
 
 /// {@template plunger}
 /// [Plunger] serves as a spring, that shoots the ball on the right side of the