[模板BUG]thoughtlite主题的模板bug #2

[govmoe]

描述bug
可能sub menu菜单的问题解决了，但新的问题是拉到最下面会有一大块白色空白，当鼠标移到sub menu时，那块空白会消失，sub menu的背景是透明的，可以改成主题色之类的？

继 #4055 的REPORT

期望的正常结果
修复这个小问题

复现步骤
正常设置就能遇到这个问题

环境

• 【必填】NotionNext版本 4.9.5.7
• 【必填】主题 thoughtlite
• 【必填】部署方案 Vercel

补充说明

[qianzhu18]

Thanks for the detailed report! This is caused by two issues in MenuItemDrop.js:

1. Transparent submenu background — The inline submenu is portaled to document.body (outside #theme-thoughtlite), where the CSS variables --tl-surface / --tl-border don't resolve.
2. White gap at bottom — The submenu uses invisible instead of hidden, so it still occupies layout space even when closed.

I've submitted a fix in PR #4125 which addresses both issues.