bugfix(input/taginput):点击清空按钮，自动失焦了 ——还是希望继续编辑

[zhoulujun]

Version / Branch / tag

出了什么问题？(What Happened?) 具体参考 TDesign https://tdesign.tencent.com/vue-next/components/input#app

如何复现？(How to reproduce?)

预期结果(What you expect?) 还希望继续编辑 失焦才真正提交请求