Merge "Store the themed icon enabled state in SharedPreferences" into sc-dev am: 762404e975 am: b6b93ef6c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/15109457

Change-Id: I88c750c3456dde0d846a61b3d480349ba676e215