[Bug/Web]Web前端LaTeX公式渲染不正确

[zhang-stephen]

What version of Kimi Code is running?

0.18.0

Which open platform/subscription were you using?

kimi-code/kimi-for-coding

Which model were you using?

kimi-code/kimi-for-coding

What platform is your computer?

Windows 11 25H2, Pro Workstation x64

What issue are you seeing?

在web前端中，公式渲染不正确，蓝色高亮部分不应该出现，不同LaTeX定界符处理均不正确，如图。

What steps can reproduce the bug?

1. 使用kimi web命令打开前端页面
2. Prompt：使用不同的定界符输出公式 E = mc2
3. 观察到Kimi返回的结果渲染不正确，如图

What is the expected behavior?

公式正确渲染，多余部分不应该出现

Additional information

No response