Add 2254-class-value test to knownfailures.json. am: f95075d4f8 am: 58be5cd049 am: 96fc5fc8de

Original change: https://android-review.googlesource.com/c/platform/art/+/2393007

Change-Id: Ie53ab237691b56110786a472ede2fbfa5d9c9d90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>