[ART] Fix tests after enabling dexopt_secondary_isa_only_when_needed flag

Fix the tests by mocking the results of DexUseManager and
PackageManagerLocal to return the expected results, since with the flag
turned on less ABIs are considered for compilation unless we have Dex
usage for them.

Bug: 306362133
Bug: 428313126
Test `atest ArtServiceTests` with the flag on and off
Flag: EXEMPT fix tests

Change-Id: Iff9e718af0a7e63b057876edf5f5659b17fe9526