Merge "Update the bg app notification language per UX spec" into tm-dev am: f7260037

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17512398



Change-Id: I2a984b18c1987059b0f05cae94f602348cfa3a4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>