Describe the bug
SAML provider does not force user to authenticate when ForceAuthn flag is set to true

To Reproduce

1. User is logged into authentik
2. Sends a saml request from SP with with ForceAuthn flag to true
3. Saml redirects take place and the user is taken to the application

Expected behavior
User should be forced to authenticate again.

Version and Deployment (please complete the following information):

• authentik version: 2023.10.7
• Deployment: docker-compose