api路由中设置maxBytes不生效

[strong-xiaoge]

Describe the bug 在api文件中给路由组设置了maxBytes为1368709120，生成代码后实际运行的maxBytes还是默认值，没有生效

1. The code is

   server.AddRoutes(
     []rest.Route{
         {
             Method:  http.MethodPost,
             Path:    "/xxx/xxx",
             Handler: aioxiekang.Upload(serverCtx),
         },
     },
     rest.WithPrefix("/xxx/xxx"),
     rest.WithMaxBytes(1368709120),
   )
   

2. The error is

   request entity too large, limit is 1048576, but got 1448382, rejected with code 413

Expected behavior 请求成功，正常返回

Environments (please complete the following information):

• OS: [e.g. Windows]
• go-zero version [e.g. 1.7.2]
• goctl version [e.g. 1.7.2, optional]