update_engine: change notication order am: 57497984e2

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3201753

Change-Id: I3683ed4ddd0cdd09ed9d6d01ba940bed9ab4f695
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>