Fix broken aggregation behavior for pinned contacts and tests

Update the value of some pre-defined constants in tests
Make sure that aggregation correctly sets pinned positions for
aggregated contacts - the lowest pinned position of all constituent
raw contacts, and 0 if none of them are pinned.

Bug: 16628573
Change-Id: I3e072baf7ff933a6eef861ed394f3fc817aee48b
2 files changed