[automerger skipped] [RESTRICT AUTOMERGE][pm] still allow debuggable for system app downgrades am: 341669af52 am: 5507f1ddc2 -s ours am: 88c994d449 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21267341

Change-Id: I303eb7fb23c529ac13a32d527a663aa7fd804248
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>