[Bug Report] Open options in select el - click to Arrow Down (its important) and try to close it clicking by arrow Up - options don't collapse!

### Element UI version
2.15.6

### OS/Browsers version
Windows, chrome 93 and upper

### Vue version
2.6.14

### Reproduction Link
https://codepen.io/roman-kuznetsov-the-flexboxer/pen/NWgeXGY

### Steps to reproduce
reproduce can in your component guide
https://element.eleme.io/#/en-US/component/select
scroll to - Option filtering
Click to Arrow Down (its important) in select element and try to close it clicking by arrow Up

video with bug https://drive.google.com/file/d/10gPu9MtRk8VDvedggSukjgOA0lo_vCXb/view?usp=sharing

### What is Expected?
select - opens and collapses, by click Arrow up/down

### What is actually happening?
select - opens and does not collapses, by click Arrow up/down