[Style] [table-column, table] 嵌套Table fixed column显示问题

[liumangafei]

Bug Type: Style

Environment

• Vue Version: 3.4.27
• Element Plus Version: 2.7.3
• Browser / OS: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
• Build Tool: Vite

Reproduction

Related Component

• el-table-column
• el-table

Reproduction Link

Element Plus Playground

Steps to reproduce

1、展开会话的expand下拉，显示子table列表
2、左右拖动preview的展示范围，左右滑动子列表的隐藏部分，观察子列表的'测试'列显示样式

例图：
http://sdgi6zcza.hd-bkt.clouddn.com/%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A120240514-115304%402x.png

What is Expected?

嵌套表格fixed样式能独立正确显示

What is actually happening?

嵌套表格fixed样式受到父表格fixed状态影响

Additional comments

(empty)