✅ test(user): update user service test to include avatarFile relation

- add 'avatarFile' to relations in findOne call to match actual service implementation
- ensure test covers complete user data retrieval scenario

src/server/modules/users/__tests__/user.service.test.ts

@@ -106,7 +106,7 @@ describe('UserService', () => {
 
       expect(mockUserRepository.findOne).toHaveBeenCalledWith({
         where: { id: 1 },
-        relations: ['roles']
+        relations: ['roles', 'avatarFile']
       });
       expect(result).toEqual(mockUser);
     });