Merge "Make custom style tiles border support DT" into ub-launcher3-master am: 16d8cb9869

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/11650327

Change-Id: I00f11c0a5b994893b4bb8033d60a9ccb4d3daf88