Cache affordances and selection picker side am: 1223468ba9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/25116006

Change-Id: I95a416a37a29f14ac56cad62c5a2be0775a0f460
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>