Postprocess hardening (#9122)
* hardenning
* Fix code
* add changeset
* Fix tests
* add test fuzzer
* Clean up
* revert
* Fix
* Add code
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
