Protect usage data with OP_GET_USAGE_STATS.

APIs that return package usage data (such as the new ArtManager)
must ensure that callers hold both the PACKAGE_USAGE_STATS permission
and the OP_GET_USAGE_STATS app-op.

Bug: 77662908
Test: atest vendor/xts/gts-tests/hostsidetests/dexapis/host/
Change-Id: I7a85d959f1682d2bd5cf3684415e368fece88101