fix：修复日志系统响应序列化器错误

- 修复res.getHeader is not a function错误
- 添加响应对象方法存在性检查
- 确保日志系统在各种响应类型下正常工作

src/core/utils/logger/logger.config.ts

@@ -200,8 +200,8 @@ export class LoggerConfigFactory {
         statusCode: res.statusCode,
         statusMessage: res.statusMessage,
         headers: {
-          'content-type': res.getHeader('content-type'),
-          'content-length': res.getHeader('content-length'),
+          'content-type': res.getHeader ? res.getHeader('content-type') : res.headers?.['content-type'],
+          'content-length': res.getHeader ? res.getHeader('content-length') : res.headers?.['content-length'],
         },
         responseTime: res.responseTime,
       }),