Merge "Set grid progress even when task count is 0." into tm-qpr-dev am: 82f05a857d am: 78fcf6aaeb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20508307

Change-Id: I4a6114da8e3789418c8a2f378e0d88d01c2f7703
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>