refactor: added bottom wall coloured asset and fixed position and priority with dino bottom wall

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

@@ -26,10 +26,10 @@ class _BottomBoundary extends BodyComponent with InitialPosition {
   /// {@macro bottom_boundary}
   _BottomBoundary()
       : super(
-          priority: 1,
+          priority: Ball.boardPriority + 2,
           children: [_BottomBoundarySpriteComponent()],
         ) {
-    renderBody = false;
+    renderBody = true;
   }
 
   List<FixtureDef> _createFixtureDefs() {

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

@@ -221,6 +221,6 @@ class _DinoBottomWallSpriteComponent extends SpriteComponent with HasGameRef {
     );
     this.sprite = sprite;
     size = sprite.originalSize / 10;
-    position = Vector2(23.8, -9.5);
+    position = Vector2(23.6, -9.5);
   }
 }