OpenID Connect: Use group details from user_info endpoint #3873

Describe the Bug

It seems the application only parses the id_token when enumerating group claims but not the userinfo endpoint resulting in missing groups when user_info is in use.
We have a large amount of custom claims containing lots of groups making usage of id_token impossible (as its size would be simply too much).

Steps to Reproduce

1. Make sure you IdP uses user_info to send claims with groups
2. Configure OIDC to sync groups
3. Dump user detail upon login

Expected Behaviour

A list of groups should be returned.

Browser Details

Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0

Exact BookStack Version

v22.10.2

PHP Version

8.1.12

Hosting Environment

Rancher Kubernetes

Docker image: solidnerd/bookstack:latest

Clean install