[Bug Report] el-table的展开行里面再放一个el-table，设置了fixed的el-table-column会显示异常
Open
- Dominant language
- Vue
- Stars
- 54k
- Forks
- 14.4k
- PR merge metrics
- No merged PRs in 30d
Description
### Element UI version
2.15.14
### OS/Browsers version
chrome / 119.0.6045.125
### Vue version
2.7.16
### Reproduction Link
https://codepen.io/1685635081/pen/oNOyZMV
### Steps to reproduce
如链接所示，在el-table中的展开行中再放一个el-table，同时两个table都设置了尾项fixed=right，且都设置了最大高度，出现了横向和纵向的滚动条。此时点开展开行，会发现第二层级table的fixed项显示为异常
### What is Expected?
正常显示
### What is actually happening?
显示异常
Contributor guide
No contributing guide indexed for this repository
Assessment
This issue has not been assessed yet.