Allow settings custom headers in js client (#9930)
* Allow settings custom headers in js client
* add changeset
* get_jwt doesn't need additional headers
* format
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Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Hannah <hannahblair@users.noreply.github.com>
