Merge "Null out RemoteTargetHandles as soon as finishing recents is requested" into sc-v2-dev am: 759e15fe45 am: b118667290

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15661931

Change-Id: I27371b7e99597e8805d647421581fa4cdacb4989