List an organization's activity policies for support investigation.

Read-only view of the policies authored for an org (id, name, version, assigned groups, timestamps) so support can audit the shape/version of policies in the field without going through the org-scoped product API. Use /api/support/activity-policies/<id>/ for one policy's full config. Not gated by the activity-tracking flag — support can inspect a policy even after the flag is toggled off.