Blinking on change routerConfig

[darkstarx]

Hi and thanks for the great package!

I noticed blinking the screen when I change the routerConfig in the MaterialApp.router.

https://github.com/user-attachments/assets/3f8c831e-048d-45f1-af47-4cf1c47fe54a

Here is the code of the app

`main.dart`

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

import 'router1.dart';
import 'router2.dart';


final _routers = <RootStackRouter>[
  Router1(),
  Router2(),
];


void main()
{
  runApp(const App());
}


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

  @override
  State<App> createState() => _AppState();
}


class _AppState extends State<App>
{
  @override
  void initState()
  {
    super.initState();
    Future.delayed(const Duration(seconds: 2), () => setState(() {
      if (++_router >= _routers.length) _router = 0;
    }));
  }

  @override
  Widget build(final BuildContext context) {
    return MaterialApp.router(
      title: 'Flutter Demo',
      theme: ThemeData(useMaterial3: true),
      routerConfig: _routers[_router].config(),
    );
  }

  var _router = 0;
}

`router1.dart`

import 'package:auto_route/auto_route.dart';

import 'home_page.dart';


class Router1 extends RootStackRouter
{
  @override
  List<AutoRoute> get routes => [
    AutoRoute(path: '/', page: HomeRoute.page),
  ];
}


class HomeRoute extends PageRouteInfo<void>
{
  const HomeRoute({ final List<PageRouteInfo>? children })
  : super(
      HomeRoute.name,
      initialChildren: children,
    );

  static const name = 'HomeRoute';

  static final page = PageInfo(
    name,
    builder: (data) {
      return const HomePage(title: 'Page 1');
    },
  );
}

`router2.dart`

import 'package:auto_route/auto_route.dart';

import 'home_page.dart';


class Router2 extends RootStackRouter
{
  @override
  List<AutoRoute> get routes => [
    AutoRoute(path: '/', page: HomeRoute.page),
  ];
}


class HomeRoute extends PageRouteInfo<void>
{
  const HomeRoute({ final List<PageRouteInfo>? children })
  : super(
      HomeRoute.name,
      initialChildren: children,
    );

  static const name = 'HomeRoute';

  static final page = PageInfo(
    name,
    builder: (data) {
      return const HomePage(title: 'Page 2');
    },
  );
}

`home_page.dart`

import 'package:flutter/material.dart';


class HomePage extends StatelessWidget
{
  final String title;

  const HomePage({ super.key, required this.title });

  @override
  Widget build(final BuildContext context)
  {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(title),
      ),
    );
  }
}

There is no blinking with go_router or some other navigation packages. Could you please check what is the reason and how to avoid this behavior? Thanks.