When the datepicker select date pop-up box is opened on ie, the upper left corner flashes and then displays normally

[ding991]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.7.7

Environment

vue:2.6.10

Reproduction link

https://www.antdv.com/components/date-picker-cn/#API

Steps to reproduce

在IE11上打开时间选择器，首先会在左上角闪烁。

What is expected?

参考#1833，用cdn加载解决不了，全量引入的包过大，改动弹框的动画也无效，所以想问问有没有别的解决方案。

What is actually happening?

datepicker 选择日期弹框在ie上打开时左上角闪烁后又正常显示

[tangjinzhou]

参考文档代码，加入 polifill

[ding991]

@tangjinzhou 引入了core-js，但是没效果

[github-actions]

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