Updated chat ui (#3370)
* test
* changes
* chagnes
* changes
* changes
* changes
* changes
* Update CHANGELOG.md
* changes
* Update demo/chatbot_multimodal/run.py
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
* Update demo/chatbot_simple_demo/run.py
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
* changes
* changes
* changes
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Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
