Add contentDescription to QCActionItem / QCItem am: b04a6e0072 am: 829ee323b4 am: 6fc982c242

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

Change-Id: I9c3ceb0174b98e2e2ed1246580d4b1f2792bd4c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>