Fix gtest failures due to userfaultfd GC am: 65429ce9bc am: 782a7906ed am: 2669fc03d5 am: a595a4ba0c am: 56d06da42e

Original change: https://android-review.googlesource.com/c/platform/art/+/2109944

Change-Id: If084dadd30f12e54bbf1bf59d68783ab5f4a8f94
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>