Merge "Hide OverviewActions when no tasks showing after launcher reset." into ub-launcher3-rvc-dev am: cc74b3a79c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/11709513

Change-Id: I4bdb5c02fe43b78fff848583ce719164910f219f