Returning JSON from `login_user` for third party auth failures makes the response more consistent with all other `login_user` responses. The only calls to `login_user` with this failure are processed by `shim_student_view` which will in-turn remove this JSON. This improves the `login_user` response in advance of switching the logistration page to use `login_user` without `shim_student_view`. ARCH-1253
Status: Maintenance Responsibilities ================ The ``user_authn`` app contains user authentication related features such as login and registration. Direction: Extract ================== Ideally this would be in its own service, but at this point, LMS is the home of all authentication related features. At this time, these features are still plugged into Studio. Future clean-up in Studio is intended to make this an LMS only feature. Glossary ======== More Documentation ==================