Merge "Add hidl_test to TEST_MAPPING" into main am: 225d46b066 am: 529a3f9820

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2904939

Change-Id: I3693420df30d8314cc4878c43b9ba708de96f220
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>