Radio, RadioButton and RadioGroup should accept Boolean as value

[M1CK431]

This function solves the problem (这个功能解决的问题)

I would like to use Radio, RadioButton and RadioGroup to build a true/false switch (it looks better than the dedicated Switch component in my use case). Of course it's already working but raise a warning in browser console. In addition, I can't see any reason to forbid a Boolean as value here. What do you think?

Expected API (期望的 API)

No change is required at API, except that the existing value prop should just accept a Boolean in addition of String and Number.

[Sepush]

@equt 不需要 n-radio label 太多label 反而不清晰了

[07akioni]

@equt 不需要 n-radio label 太多label 反而不清晰了

For component that has too many issues, I think we can add a tag. Currently I think the only one is data table.

cc @equt @Sepush

[M1CK431]

It's soooo fast! 🚀 Thanks a lot!