Fix overlap between app grid options in wallpaper settings. am: e04905c616 am: ce96593c5f

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

Change-Id: I9a8158914f0286e80f59c435efffcdaacd80a89d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>