Disable APP_ARCHIVING flag for specific test

APP_ARCHIVING flag was introduced to control archiving feature in
Settings separately from OS.
The broken test was expecting archiving feature flag be disabled but it
didn't take into account a newly introduced flag which was automatically
rolled out in ag/26270549

Test: AppButtonsTest
Bug: 325632047
Change-Id: I02a1f4e2e2bfa1b85f2d993c4127698c8a6195dc