fix: keep focus on game

test/game/view/pinball_game_page_test.dart

@@ -10,6 +10,7 @@ import 'package:leaderboard_repository/leaderboard_repository.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:pinball/assets_manager/assets_manager.dart';
 import 'package:pinball/game/game.dart';
+import 'package:pinball/l10n/l10n.dart';
 import 'package:pinball/select_character/select_character.dart';
 import 'package:pinball/start_game/start_game.dart';
 import 'package:pinball_audio/pinball_audio.dart';