Improve OpenAfterOpen VTS test am: 056aa140ca

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3040299

Change-Id: I1ba8e032c62f3e5b21844f776ea0fc918d2f2529
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>