For #28196
This PR adds the capability to SCIM API to PATCH a User using
op:replace. This brings us closer to fully supporting Entra ID SCIM.
In future PR:
- Add support op:add
- Add support for op:remove
- Add support for PATCH to Group
- Add filter support
# Checklist for submitter
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality
