Unshadowed a test

There were two test methods named `test_create_authorization_response`
in [`tests.oauth1.rfc5849.endpoints.test_authorization.ResourceEndpointTest`](https://github.com/idan/oauthlib/blob/393d09ad41d350d2b5cc8c5072cc5cf191ce8638/tests/oauth1/rfc5849/endpoints/test_authorization.py#L40-L54),
so second one was shadowing the first.