Merge "Fix security vulnerability allowing apps to start from background" into sc-dev am: 408cac13c0 am: 3b2f30dfc9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/26941037

Change-Id: Iac310de3e4f58d476a621c3c9b84f51eb69d36c1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>