[Bug Report] 文件上传，设置禁用状态时，禁用时不能删除
Open
- Dominant language
- Vue
- Stars
- 54k
- Forks
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Description
### Element UI version
2.15.14
### OS/Browsers version
chrome lastest
### Vue version
2.7.16
### Reproduction Link
https://codepen.io/chaoling/pen/VYeLrJJ
### Steps to reproduce
https://codepen.io/chaoling/pen/VYeLrJJ
上传两个文件后，不能删除
### What is Expected?
https://codepen.io/chaoling/pen/VYeLrJJ
上传两个文件后，可以删除
### What is actually happening?
https://codepen.io/chaoling/pen/VYeLrJJ
上传两个文件后，不能删除
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