store is admin in fake user repo

tests/Fakes/FakeUserRepository.php

@@ -28,6 +28,7 @@ class FakeUserRepository implements UserRepository
         return new User(
             id: $user->getId(),
             email: $user->getEmail(),
+            isAdmin: $user->isAdmin(),
         );
     }
 
@@ -37,6 +38,7 @@ class FakeUserRepository implements UserRepository
         $user = new User(
             id: $id,
             email: $dto->email,
+            isAdmin: $dto->isAdmin,
         );
         $this->existingUsers[$id] = $user;