onCalendarChange returns undefined value

[chinhoe]

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

Reproduction link

Steps to reproduce

1. Select any date in RangePicker
2. Check returned value in console

What is expected?

Return an array of date in strings, similar to onChange

What is actually happening?

Returns 'undefined' instead

Environment	Info
antd	3.26.5
React	16.12.0
System	macOS Catalina (10.15.2)
Browser	Google Chrome (79.0.3945.88)

[yoyo837]

@zombieJ 根据 react-component/calendar 的git历史，onCalendarChange 从未支持过第二个参数，文档和类型从 #8355 加入，#17373 补充其版本since 3.10.9 也是不正确的。现在是修复这个问题还是从文档中删除呢？

[zombieJ]

如果一直没有的话就清理一下文档吧。