fix: test coverage

test/game/bloc/start_game_event_test.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: prefer_const_constructors
+
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pinball/game/bloc/start_game_bloc.dart';
 
@@ -5,22 +7,22 @@ void main() {
   group('StartGameEvent', () {
     test('SelectCharacter supports value equality', () {
       expect(
-        const SelectCharacter(),
-        equals(const SelectCharacter()),
+        SelectCharacter(),
+        equals(SelectCharacter()),
       );
     });
 
     test('HowToPlay supports value equality', () {
       expect(
-        const HowToPlay(),
-        equals(const HowToPlay()),
+        HowToPlay(),
+        equals(HowToPlay()),
       );
     });
 
     test('Play supports value equality', () {
       expect(
-        const Play(),
-        equals(const Play()),
+        Play(),
+        equals(Play()),
       );
     });
   });