Nested module should override parent binding

[vgabler]

Describe the bug If i have a singleton binding of type T, then navigate to a child module route wich also binds to this same T (but a different implementation), the returned instance inside this child module comes from the parent instead of overriding.

Environment Flutter 3.32.2

Pubspec.yaml

name: test_sub_editor
description: "A new Flutter project."
publish_to: 'none'
version: 0.1.0

environment:
  sdk: ^3.8.1

dependencies:
  flutter:
    sdk: flutter
  flutter_modular: ^6.4.1

dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_lints: ^5.0.0

flutter:
  uses-material-design: true

To Reproduce From new flutter empty application Here is the minimal reproducible code:

main.dart

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

import 'modules.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  runApp(
    ModularApp(
      module: BaseModule(),
      child: MaterialApp.router(
        title: 'Child Module Bug',
        theme: ThemeData(primarySwatch: Colors.blue),
        routerConfig: Modular.routerConfig,
      ),
    ),
  );
}

modules.dart

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

import 'services.dart';

class BaseModule extends Module {
  @override
  void binds(Injector i) {
    i.addLazySingleton<GetHelloMessage>(GetHelloMessageBase.new);
  }

  @override
  void routes(RouteManager r) {
    r.child(
      '/',
      child: (context) => BasePage(
        title: "BASE MODULE",
        navigate: () => Modular.to.pushNamed("childModule/"),
      ),
    );
    r.module("/childModule/", module: ChildModule());
  }
}

class ChildModule extends Module {
  @override
  void binds(Injector i) {
    i.addLazySingleton<GetHelloMessage>(GetHelloMessageChild.new);
  }

  @override
  void routes(RouteManager r) {
    r.child(
      '/',
      child: (context) =>
          BasePage(title: "CHILD MODULE", navigate: () => Modular.to.pop()),
    );
  }
}

class BasePage extends StatelessWidget {
  const BasePage({super.key, required this.title, required this.navigate});

  final String title;
  final Function() navigate;

  @override
  Widget build(BuildContext context) {
    final getHelloMessage = Modular.get<GetHelloMessage>();

    return Scaffold(
      appBar: AppBar(title: Text(title)),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(getHelloMessage()),
            FilledButton(onPressed: navigate, child: Text("Navigate")),
          ],
        ),
      ),
    );
  }
}

services.dart

abstract class GetHelloMessage {
  String call();
}

class GetHelloMessageBase implements GetHelloMessage {
  @override
  String call() {
    return "Hello from BASE";
  }
}

class GetHelloMessageChild implements GetHelloMessage {
  @override
  String call() {
    return "Hello from CHILD";
  }
}

Expected behavior The child module should prioritize it's own bindings instead of the parent's. In "Child Module" page, we should see the message "Hello from CHILD"

Screenshots