Merge "Crossfading splashscreen if icon is themed" into sc-dev am: 55060ca7ea am: f93a6e64cf

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

Change-Id: Ib7f542a4bd883dcb54e7876dfce1e34e14ac8d58