[Bug Report] el-select在el-table的cell中由v-focus指令点击时会出现2个气泡

### Element UI version
2.15.9

### OS/Browsers version
win10/chrome103

### Vue version
2.6.14

### Reproduction Link
https://codepen.io/wbxyy/pen/VwXLzKw

### Steps to reproduce
1、在el-table中放置el-column，在el-column中放置el-select
2、给el-select添加v-focus指令，该指令会在el-select插入时执行点击el-select操作
3、给el-table添加row-click事件，该事件根据点击渲染el-select

### What is Expected?
el-select出现一个el-popper

### What is actually happening?
el-select出现了2个el-popper，一个是正常select放出的el-pooper，一个是el-table__fixed隐藏元素放出的el-pooper