Add apex packages to uid_mapping

StatsCompanionService currently only pulls on MATCH_KNOWN_PACKAGES but
we also need to add MATCH_APEX flag option to get apex modules in the
installed packages list.

Bug: 130773130
Test: make + cts
Change-Id: I7205cd58fb3276981f7a6c765e82b39dfb7af7ec
1 file changed