Merge "Store the themed icon enabled state in SharedPreferences" into sc-dev am: 762404e975 am: 6c36c26e6a

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

Change-Id: Ieccbda5e39de95eb32c7ae27493e70033899cde4