Drawer 设置zIndex 不在class名ant-drawer 而是在ant-drawer-content-wrapper上 这设置zIndex的意义不大呀

[littlepurple]

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

Version

4.2.6

Environment

生产

Reproduction link

https://antdv.com/components/drawer/#Drawer

Steps to reproduce

必现

What is expected?

Drawer 设置zIndex 设置的是最外层的class名 ant-drawer

What is actually happening?

Drawer 设置zIndex 不合理