New user can't connect EF account

After running a quick test with a user that isn't already in the openvsx DB, it was found that they can't connect their EF account.

Upon further investigation, it appears the auth filter is relying on a missing openid scope to validate the current user. This scope is not present, and the /oauth2/userinfo endpoint can't be used.

Modifications need to be made to the authentication process to remove this dependency.