服务启动后，通过iframe形式把coze web嵌入到已有的页面中，会出现cookie无法保存，导致请求接口出现异常

接口请求的时候，header中不会带上cookie，接口报错信息
{"code":700012006,"msg":"authentication failed: missing session_key in cookie"}

Start by reproducing the existing-page iframe embedding and inspect whether the session cookie is saved and sent on interface requests. Compare the request headers with the reported missing session_key in cookie; the fix is complete when the cookie persists in the embedded web app and authentication succeeds.

Written by the indexing model from the issue text.