Select 自定义下拉面板, 当点击面板中的按钮+号时, 会丢失 搜索值

[vaynevayne]

https://stackblitz.com/edit/react-djm2de?file=demo.tsx

https://stackblitz.com/edit/react-13vdsn?file=demo.tsx

Steps to reproduce
输入 1, 然后点击 下拉面板中的 号

What is expected?
点击 号, 不要清空搜索值

What is actually happening?
点击 号, 搜索值被清空了

antd issue: ant-design/ant-design#42933