fw: delay TracingServiceProxy until PHASE_THIRD_PARTY_APPS_CAN_START

Because all methods in TracingServiceProxy want to bind/start services
in places outside system_server, it makes sense to wait until
PHASE_THIRD_PARTY_APPS_CAN_START to actually publish the service

This should solve some subtle race conditions around OOM heap dumps where they were being dropped on the floor by system_server because the GMSCore package had not yet been populated by PackageManager.

Bug: 333846370
Change-Id: I1addeafd9eac69e11c896fdda9a7a3924c09e22c