test: remove grouping

test/character_themes/cubit/theme_cubit_test.dart

@@ -9,9 +9,8 @@ void main() {
       expect(themeCubit.state.theme, equals(const DashTheme()));
     });
 
-    group('themeSelected', () {
     blocTest<ThemeCubit, ThemeState>(
-        'emits selected theme',
+      'themeSelected emits selected theme',
       build: ThemeCubit.new,
       act: (bloc) => bloc.themeSelected(const SparkyTheme()),
       expect: () => [
@@ -19,5 +18,4 @@ void main() {
       ],
     );
   });
-  });
 }