[SelectedFilters] add a possibility not to display filter labels

[kud]

Affected Projects React.js

Is your feature request related to a problem? Please describe. I would like not to display the filter label on the SelectedFilters items.

Describe the solution you'd like Giving false or null or "" could remove the filter label.

-> https://github.com/appbaseio/reactivesearch/blob/next/packages/web/src/components/basic/SelectedFilters.js#L77