Don't persist APEX

Invalid UID will cause parsing error in libpackagelistparser
which in turn causes the 'run-as' command to fail.

APEX packages should never be used with 'run-as'.

Bug: 225756739
Fix: 233872653
Test: atest CtsJvmtiAttachingHostTestCases
Change-Id: I2a13768f114749f60f1f61a586674a71b84635ed