Fix overlap between app grid options in wallpaper settings. am: e04905c616

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/20446953

Change-Id: Iec4416ff3d5c617cc646dbbe66cba0ef2877b5e7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>