DOC: Write a unified backend doc #12324
Description
removed wx mocking in #12322 to unbreak the doc builc. A todo would be to get this back in the docs in a more rational manner.
Is it possible to make wx.GetAp() return False in the mock object instead? It would be nice not to lose the docs...
We already got rid of qt and gtk docs for the same reason. I'd rather write a proper unified interactive backends doc at some point...
Originally posted by @anntzer in #12322 (comment)