fix: 更新AuthServiceImpl实现

Co-Authored-By: Claude <noreply@anthropic.com>

aioj-backend-auth/src/main/java/cn/meowrain/aioj/backend/auth/service/impl/AuthServiceImpl.java

@@ -107,7 +107,7 @@ public class AuthServiceImpl implements AuthService {
         String cacheValue = stringRedisTemplate.opsForValue().get(cacheKey);
 
         if (cacheValue == null || !cacheValue.equals(refreshToken)) {
-            throw new ServiceException("Refresh Token 已失效");
+            throw new ServiceException(ErrorCode.NO_AUTH_ERROR);
         }
 
         // 再次签发新的 Access Token