Prevent to get user_id from request without view_args

If user_id is accessed before view_args has been setup, we should not cache None as value but instead raise an exception. The user_id may be accessed before the mapping if the request is logged because the representation of the request used the rpc_method which needs to parse the request data. But since 1923117e935d parsing compressed content is only allowed for request with user_id. So we can no more include the rpc_method is the request has not yet been mapped and so it has a view_args.

Closes #13203 (closed)