[bug report] El toolip: when the click event triggers confirm, there is a focus problem after confirm completes processing, and toolip will appear on its own.

### Element UI version
2.13.1

### OS/Browsers version
win10/chrome79.0.3945.79

### Vue version
2.6.11

### Reproduction Link
https://codepen.io/chenxch/pen/ExVvjob

### Steps to reproduce
1、点击tooltip包裹的按钮
2、处理弹出框，取消或者确定
3、按钮的tooltip就自动出现了

### What is Expected?
confirm处理后，tooltip不要自动focus当初提示

### What is actually happening?
confirm处理后，tooltip自动focus了