Improve MessageQueue tests for error handling am: ec445d7fac am: e744725bfe

Original change: https://android-review.googlesource.com/c/platform/system/libfmq/+/3269996

Change-Id: I2fc03270bfb395d19b58b859fc4619de04473d78
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>