Only consider active apexes for apex-system-service list.

ApexManager parses all apexes, however, we want to report only active
apexes for apex-system-service.

Fix: 218978879
Test: atest ApexManagerTest#testGetApexSystemServices
Change-Id: I070d98fb2057be4f637a04b8001d25577766d9e1
2 files changed