[BUG] OIDC still allows Local Auth

[difi80211g]

Describe the bug
I setup authentication with OIDC and did not set IRIS_AUTHENTICATION_LOCAL_FALLBACK=True. However when once a User was created and allowed to login with OIDC, they were still able to login with a local password. Having a backup password when the user is created sholdn't allow that user to login with a local password when OIDC is enabled.

To Reproduce
Steps to reproduce the behavior:

1. Enable OIDC
2. Create the local user
3. Login with OIDC
4. Login with local password

Expected behavior
If IRIS_AUTHENTICATION_LOCAL_FALLBACK=True is not set, you should not be able to login with local accounts at all when IRIS_AUTHENTICATION_TYPE=oidc

Additional context
Currently running 2.4.24