Fix custom `js` param (#12508)
* fix js
* add changeset
* fix spa
* add changeset
* fix
* Fix
* Fix
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Freddy Boulton <41651716+freddyaboulton@users.noreply.github.com>
