Fix package equivalence tests

Mirror a change which introduced a new defaulted ActivityInfo flag,
and trim nonLocalizedLabel to address a long standing bug in v1 parsing
which has been addressed in v2. This was previously hidden and only
exposed due to APK changes from prebuilts.

Bug: 184574333

Test: atest com.android.server.pm.parsing

Change-Id: Ib92ae708d6f42fe744642066b73e13fe1c443cbf