Return final output for generators in Client.predict (#5057)
* Add code
* add changeset
* add changeset
* Add feat changeset
* Fix js code snippet
* Fix changelog
* Add test
* Delete code
* Lint
* Make fix for python client
* Make JS client changes
* Add submit line to error
* Changelog
* Lint
* Undo
* Add dual handling
---------
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
