Disables flaky test am: 2443af6d8a am: 27ca130809

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/21534072

Change-Id: Ic2f82c00305e32efc86f116b4186840f1c30f157
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>