[Internal] Fix `ty` quality (#3441)
* fix ty quality
* ignore possibly-missing-attribute
* fix
* imports
* fix
* type discussion event common args
* Update src/huggingface_hub/_webhooks_server.py
Co-authored-by: Lucain <lucain@huggingface.co>
---------
Co-authored-by: Lucain Pouget <lucainp@gmail.com>
Co-authored-by: Lucain <lucain@huggingface.co>
