Merge "Update taskbar color in onConfigurationChanged()" into sc-v2-dev am: 238bf4f30d am: ad42bf08d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15779380

Change-Id: Iae43b524b98fd34824e62554130dcd66cd5a706c