Allow component in `labelKey`

[brettdewoody]

Is your feature request related to a problem? Please describe.
No, it is clearly documented that labelKey should return a string. This request is to enable labelKey to return JSX so the selected item can be formatted. Similar to how renderToken works.

Describe the solution you'd like
Enable labelKey to return JSX so the selected item can be formatted. Similar to how renderToken works.

How is this solution useful to others?
Displaying a renderLabel (or ability to return JSX in labelKey) would beconsistent with renderToken.

Describe alternatives you've considered
It might be possible to use renderInput to achieve this but that adds complexity.

[ericgio]

The labelKey property has to return a string because it's used to filter results. You can format the output any way you want when rendering. I'm not sure what your particular use case is, but there should already be a way to achieve what you want.