Fix crash of resource not found am: 64d53e549c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/24083114

Change-Id: I80e41321824f1088fbedc58c6a4684d6a7429114
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>