[automerger skipped] Merge "[RESTRICT AUTOMERGE][pm] prevent system app downgrades of versions lower than preload" into sc-v2-dev am: ba19cee2 -s ours am: f7ca2c9b -s ours am: 953c7189 -s ours am: e77cfae3 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21160269



Change-Id: I6a69bb7099cb4a08bf4f2e8200a522aaa6e3e49f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>