Add support for Authentication Context in MgGraph

[stianstrysse]

It doesn't seem that MgGraph supports Conditional Access policies requiring Authentication Context. This is used for requiring specific policies for sensitive actions, like when creating a new Conditional Access policy, or activating an eligible Entra or Azure role in PIM. It can require compliant device, phishing-resistant MFA or known location.

https://learn.microsoft.com/en-us/entra/identity-platform/developer-guide-conditional-access-authentication-context

If we try to activate an Entra role with PIM using MgGraph, and that role requires Authentication Context,the request fails and you need to activate it in the PIM Portal GUI.

Could support for this be added somehow?