[10.6] Fix GitLab Auth0 integration signs in the wrong user See merge request gitlab/gitlabhq!2354
[10.3] Prevent login with disabled OAuth providers See merge request gitlab/gitlabhq!2296 (cherry picked from commit 4936650427ffc88e6ee927aedbb2c724d24b094c) a0f9d222 Prevents login with disabled OAuth providers