cts: Force enable all APIs in debuggable tests

Bug 325677040 has seen flakiness when boarding the M-04 train as well as
M-03 respin, where custom audience APIs are disabled. This change forces
all APIs to be in an enabled state before each test.

Test: TreeHugger
Bug: 325677040
Change-Id: Ia720611b9916f5ca722acf3115e9cf72cd818986