test: Test login redirects prefer session cookies.

Add a test to ensure that the login page redirect as long as we have a
valid session even if we have expired on non-existent JWT cookies.

lms/djangoapps/support/tests/test_views.py

@@ -81,6 +81,9 @@ class SupportViewManageUserTests(SupportViewTestCase):
         """
         Tests password assistance
         """
+        # Ensure that user is not logged in if they need
+        # password assistance.
+        self.client.logout()
         url = '/password_assistance'
         response = self.client.get(url)
         assert response.status_code == 200