Merge "Fixes for floating search bar (e.g. background protection)." into tm-qpr-dev am: abb18ea6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20518558



Change-Id: I07c5849c0371dd6e25ea435c810f25422bce4784
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>