Will this code cause a memory leak in Flutter?

Will this code cause a memory leak in Flutter?

Classes A and B reference each other:

The VM in Flutter has GC, which is different from other languages ​​I’ve learned, such as OC or Swift.
I observed through dev tools and found that it seemed to be GC, but I’m not familiar with dev tools and I’m not sure if what I observed is correct.

Another question is: will this code cause memory leaks in dart cli?

Thanks!

class A {
  late B b;
}

class B {
  final A a;
  B({required this.a});
}

class MyWidget extends StatelessWidget {
  const MyWidget({super.key});

  @override
  Widget build(BuildContext context) {
    return TextButton(
        onPressed: () {
          _onClickTest();
        },
        child: const Text('Test'));
  }

  void _onClickTest() {
    final a = A();
    final b = B(a: a);
    a.b = b;
  }
}