Convert async methods in the Examples class into normal sync methods (#5822)
* Convert async methods in the Examples class into normal sync methods
* add changeset
* Fix test/test_chat_interface.py
* Fix test/test_helpers.py
* add changeset
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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>