fix: 🐛 do not set the JWT public key URL by default
it's only useful for the Hugging Face production datasets-server, since any other instance would not receive requests from the Hugging Face Hub.

Fixes #2019 
fix: 🐛 do not set the JWT public key URL by default: it's only useful for the Hugging Face production datasets-server, since any other instance would not receive requests from the Hugging Face Hub.

Fixes #2019 