Clean up product profile assignments for already existing IMS groups

[kwin]

Currently only new product profiles are added to IMS groups. However none of them are ever deleted. That makes it impossible to switch product profiles on existing groups via ACTool. The ACTool should (optionally) also remove product profile assignments which are not configured on managed IMS groups.

[kwin]

The problem is that currently there doesn't seem to be a way to retrieve product profile assignments on existing groups. I raised this with Adobe Support in https://experienceleague.adobe.com/home?support-tab=my-cases&case-id=E-001581796&org-id=FA907D44536A3C2B0A490D4D%40AdobeOrg#support.

[kwin]

This limitation is tracked in the Adobe issue tracker with ADAC-633