Able to insert selected text into snippet

Thinking about our use case a bit more, the allow_replacement may not be necessary because we can simply remove the $selected_text$ string from the snippet.

https://github.com/ckeditor/ckeditor5/issues/6835

Hello everyone. Do others in the community find this a helpful feature? Should we build it in?
BR, Vincent

The feature doesn't really seem to be in demand in the community.
I would now close this feature request.

If someone wants it after all, or has an MR for it, please feel free to (re)open it.