There is a new pull request by logenkain against master on the void-packages repository

https://github.com/logenkain/void-packages remove-gradio
https://github.com/void-linux/void-packages/pull/27873

gradio: remove package
Gradio has been depricated for a while and doesn't seem to work anymore. Latest version available is 7.3.

The author has archieved it; its successor is shortwave.

A patch file from https://github.com/void-linux/void-packages/pull/27873.patch is attached