fix: remove Center from PlayButtonOverlay

lib/game/view/widgets/play_button_overlay.dart

@@ -21,14 +21,12 @@ class PlayButtonOverlay extends StatelessWidget {
   Widget build(BuildContext context) {
     final l10n = context.l10n;
 
-    return Center(
+    return PinballButton(
-      child: PinballButton(
+      text: l10n.play,
-        text: l10n.play,
+      onTap: () async {
-        onTap: () async {
+        _game.gameFlowController.start();
-          _game.gameFlowController.start();
+        await showCharacterSelectionDialog(context);
-          await showCharacterSelectionDialog(context);
+      },
-        },
-      ),
     );
   }
 }