Tooltip won't work with Input.Group

[Frezc]

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

Version

3.7.3

Environment

win10 chrome 68.0.3440.75

Reproduction link

Steps to reproduce

<Tooltip>
  <Input.Group> // <-- directly put group
    // other components
  </Input.Group>
</Tooltip>

What is expected?

show tooltip properly

What is actually happening?

show nothing

[yociduo]

The issue is like #11451, I will create a PR today

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