fix tests

app/Policies/FrontendOnlyPolicy.php

@@ -6,7 +6,7 @@ use App\Models\User;
 
 class FrontendOnlyPolicy
 {
-    public function before(User $user): mixed
+    public function before(User $user)
     {
         if ($user->isAdmin()) {
             return true;

tests/Unit/Models/SiteTest.php

@@ -14,11 +14,11 @@ it('will generate a site system user', function () {
         ->systemUsers->toHaveCount(1);
 
     expect($siteA->systemUsers->first())
-        ->user_name->toBe('ploiio');
+        ->user_name->toBe('ploiio-' . $siteA->id);
 
     expect($siteB)
         ->systemUsers->toHaveCount(1);
 
     expect($siteB->systemUsers->first())
-        ->user_name->toBe('examplep');
+        ->user_name->toBe('examplep-' . $siteB->id);
 });