[Bug Report] when click sort in table header, the popconfirm won't closed automatically

### Element UI version
2.15.6

### OS/Browsers version
windows chrome 98.0.4758.102

### Vue version
2.6.14

### Reproduction Link
https://codepen.io/jefferyho/pen/gOXqobR

### Steps to reproduce
1. click [ action ] > enable, the popconfirm shows
2. click [name] > sort (desc / asc), the data sorts

### What is Expected?
the popconfirm dialog hide automatically when click sort

### What is actually happening?
the popconfirm still shows at the old place