Laravel 11 service provider are not auto discovered

I created my own packages in Laravel/packages/Myname/User

my /User/composer.json contain the following :

"autoload": {
      "psr-4": {
      "Myname\\User\\": "src/"
  }
 },
 "extra": {
     "laravel": {
      "providers": [
          "Myname\\User\\Providers\\UserServiceProvider"
       ]
   }
 },

here is the main laravel composer.json autoload:

 "autoload": {
     "psr-4": {
      "App\\": "app/",
      "Database\\Factories\\": "database/factories/",
      "Database\\Seeders\\": "database/seeders/",
      "Myname\\User\\": "packages/Myname/User/src/"
   }
 },

Here is my UserServiceProvider.php

  class UserServiceProvider extends ServiceProvider
  {

   public function register()
   {
     $this->app->bind(UserInterface::class, UserRepository::class);
    }

   public function boot()
    {
       $this->loadMigrationsFrom(__DIR__.'/../../database/migrations');
    }
  }

Why my service provider is not working, since i have the extra in User/composer.json

I run also :

 composer dump-autoload

it works only when I do manually in AppServiceProvider.php the following:

 public $bindings = [
    UserInterface::class => UserRepository::class,
 ];