fix: filament v4 config registration

Author: Backstage

config/backstage/users.php

@@ -3,9 +3,14 @@
 // config for Backstage/Users
 
 use Backstage\Filament\Users\Pages\ManageApiTokens;
+use Backstage\Filament\Users\Resources\RoleResource\RoleResource;
+use Backstage\Filament\Users\Resources\UserResource\UserResource;
 
 return [
-    'resources' => [],
+    'resources' => [
+        'users' => UserResource::class,
+        'roles' => RoleResource::class,
+    ],
 
     'pages' => [
         'manage-api-tokens' => ManageApiTokens::class,

src/UsersPlugin.php

@@ -33,7 +33,12 @@ public function register(Panel $panel): void
             $users = config('backstage.users.resources.users', Resources\UserResource\UserResource::class);
             $roles = config('backstage.users.resources.roles', Resources\RoleResource\RoleResource::class);
 
-            $resources = array_merge([$users, $roles, config('backstage.users.resources')]);
+            $configResources = array_values(array_diff_key(
+                config('backstage.users.resources'),
+                array_flip(['users', 'roles'])
+            ));
+
+            $resources = array_filter(array_merge([$users, $roles], $configResources));
             $panel->resources($resources);
         }