OIDC SSO with github broken

**Version:**
 - listmonk: 4.1.0
 - OS: k8s

**Description of the bug and steps to reproduce:**

**Screenshots:**

![image](https://github.com/user-attachments/assets/9b8de089-73af-4556-b44f-d9029685cf06)

![image](https://github.com/user-attachments/assets/06fdd914-76ec-4a93-976c-b8ddd83c911c)

