Merge "Crossfading splashscreen if icon is themed" into sc-dev am: 55060ca7ea am: a8c8b9d88d am: 60a768ef9b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14687100

Change-Id: Idb8e2139bfa29042a372b2476d9ffda42d898240