Merge "Adding the flag for putting widget host in the background" into tm-qpr-dev am: 09f04d34a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20535705

Change-Id: I9a3764920bca4ab369c2ca070f02473d052a9d30
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>