refactor: reordered children additions

lib/game/components/dino_desert.dart

@@ -16,6 +16,7 @@ class DinoDesert extends Component {
           children: [
             // ChromeDino()..initialPosition = Vector2(12.3, -6.9),
             DinoWalls(),
+            Slingshots(),
           ],
         );
 }

lib/game/pinball_game.dart

@@ -44,28 +44,37 @@ class PinballGame extends Forge2DGame
   Future<void> onLoad() async {
     await add(gameFlowController = GameFlowController(this));
     await add(CameraController(this));
-    await add(Backboard.waiting(position: Vector2(0, -88)));
 
-    await add(
-      PinballCanvasComponent(
-        children: [
+    final machine = [
       BoardBackgroundSpriteComponent(),
-          Multipliers(),
-          Drain(),
-          BottomGroup(),
-          Launcher(),
-          FlutterForest(),
+      Boundaries(),
+      Backboard.waiting(position: Vector2(0, -88)),
+    ];
+    final decals = [
       GoogleWord(
         position: Vector2(
           BoardDimensions.bounds.center.dx - 4.1,
           BoardDimensions.bounds.center.dy + 1.8,
         ),
       ),
-          Slingshots(),
-          Boundaries(),
+      Multipliers(),
+    ];
+    final characterAreas = [
+      AndroidAcres(),
       DinoDesert(),
+      FlutterForest(),
       SparkyScorch(),
-          AndroidAcres(),
+    ];
+
+    await add(
+      PinballCanvasComponent(
+        children: [
+          ...machine,
+          ...decals,
+          ...characterAreas,
+          Drain(),
+          BottomGroup(),
+          Launcher(),
         ],
       ),
     );