Merge "Hide "Long Background Tasks" page from Settings." into udc-dev am: b272dbc6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23252718



Change-Id: Ie9099059b0af1947c2c9659e1c85012a5b90240d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>