Merge "Make custom style tiles border support DT" into ub-launcher3-master am: 16d8cb9869 am: 9f59617fe3

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

Change-Id: I2af00a3189c8fae586e3491f08d3ac2cc6a0ded7