Add contentDescription to QCActionItem / QCItem am: b04a6e0072 am: 90fa539778

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Car/systemlibs/+/22746901

Change-Id: I3be9960a75973569d01a1d0759eb0de36296a5ce
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>