[automerger skipped] Merge "[RESTRICT AUTOMERGE][pm] prevent system app downgrades of versions lower than preload" into sc-dev am: f47417fce9 am: 8c87e33349 -s ours am: 746376ba8b -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21160027

Change-Id: Ia6e0240b3142ec631b9da10f615023dcd884a7a7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>