[Bug]:

### Installation Method | 安装方法与平台

Pip Install (I used latest requirements.txt)

### Version | 版本

Latest | 最新版

### OS | 操作系统

Windows

### Describe the bug | 简述

向模型提问时，html语法是没法显示的，比如
你们的付费网站上也存在这个问题

### Screen Shot | 有帮助的截图


### Terminal Traceback & Material to Help Reproduce Bugs | 终端traceback（如有） + 帮助我们复现的测试材料样本（如有）

_No response_

Start by running the latest pip installation on Windows and submitting a prompt containing the reported HTML form markup. Trace the chat response rendering path to determine where the HTML is lost or displayed incorrectly. Done means the same markup renders correctly in the model response, with the behavior verified against the reported example.

Written by the indexing model from the issue text.