wrap_with_listenable_builder

Wrap the selected widget with a ListenableBuilder.

Before
Widget build(BuildContext context) {
  return Text('${counterNotifier.count}');
  //     ^^^^
}
After
Widget build(BuildContext context) {
  return ListenableBuilder(
    listenable: counterNotifier,
    builder: (context, child) {
      return Text('${counterNotifier.count}');
    },
  );
}