Add conference call CLCC index inference

In conference call, parent arrives before children. Some carkit does not like conference call parent's index before children's, some does not like index after children's.
This inference try to overcome IOP issue by assuming children arrive at the same time as the parent.

Bug: 262199042
Test: manual
Change-Id: If02047b7dbc632b28b2359efe5d968334b9ac14c