sub claim that would be attached to the idToken in the session object. I have looked into the customSession plugin, but seemingly can't use that, as only the current session and user is available, and any async call I would need to make (i.e. to the user info endpoint of the upstream provider) would require the access token.idpId to the user in the same way that it applies email and name (in this case I just want to access the sub claim instead).idToken whenever I need this information, which I can get from the getAccessToken method, but this seems quite verbose. This may be intended though for security reasons?