Optimize TM#getCarrierServicePackageName[ForLogicalSlot]

Instead of querying package manager every time which is
quite expensive, the new implementation will improve
the performance by query the cache in CarrierPrivilegesTracker.

Bug: 217442920
Test: atest CarrierPrivilegesTrackerTest
Change-Id: I29df8599bdfc84cab330fa7056a228997a4bac0f
Merged-In: I29df8599bdfc84cab330fa7056a228997a4bac0f
(cherry picked from commit 28b2ee8e)