generate Invalid route on sub-module

After running sub-module commend, generated route is unusable.
E.g get create page:login on auth
Generated route for test page is '_Paths.AUTH + _Paths.LOGIN'

### app_routes.dart
```
abstract class Routes {
Routes._();
static const SPLASH = _Paths.SPLASH;
static const LOGIN = _Paths.AUTH + _Paths.LOGIN;
}

abstract class _Paths {
_Paths._();
static const AUTH = '/auth';
static const LOGIN = '/login';
static const SPLASH = '/splash';
}
```
### app_pages.dart
```
GetPage(
name: _Paths.LOGIN,
page: () => const LoginView(),
binding: LoginBinding(),
),
```

It is impossible to use Get.toNamed(Routes.LOGIN).
because generated route for login is = "/auth/login" and actual route is = "/login"
package version is 7.0.8