Add contentDescription to QCActionItem / QCItem am: b04a6e0072 am: 90fa539778 am: 3adfabbaa0

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

Change-Id: I6231f872fdd640d7f2d377c48e777f6236433a43
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>