Stream from StreamProvider is not unsubscribed to when widgets get disposed about riverpod HOT 3 OPEN

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

// This is simplified code (to not have to implement Java code).
final eventChannelStreamController = StreamController<int>();
final eventChannelStream = eventChannelStreamController.stream;

// More similar to real code:
// const eventChannel = EventChannel('event_channel');
// final eventChannelStream = eventChannel.receiveBroadcastStream();

final streamProvider = StreamProvider.autoDispose<int>((ref) {
  ref.onDispose(() {
    // Should something be done here?
  });

  return eventChannelStream.asBroadcastStream();
});

void main() {
  eventChannelStreamController.onListen = () {
    print('Event: onListen');
  };

  eventChannelStreamController.onCancel = () {
    print('Event: onCancel');
  };

  runApp(const ProviderScope(child: MyApp()));
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  MyAppState createState() => MyAppState();
}

class MyAppState extends State<MyApp> {
  bool showTestWidget = true;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body:
            showTestWidget ? const TestWidget() : const Text('Another widget'),
        floatingActionButton: FloatingActionButton(
          onPressed: () => setState(() => showTestWidget = !showTestWidget),
          child: Icon(showTestWidget ? Icons.visibility_off : Icons.visibility),
        ),
      ),
    );
  }
}

class TestWidget extends ConsumerWidget {
  const TestWidget({super.key});
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    return ref.watch(streamProvider).when(
        data: (value) => const Text('TestWidget got data'),
        loading: () => const Text('TestWidget loading'),
        error: (error, stack) => Container());
  }
}