Ignore UnbundledChooserActivityTest am: 78c6881968

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/IntentResolver/+/18614358

Change-Id: I8aa788f7d5ec9ebf408fbc55c8e15faab87f0d33
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>