Disable userfautlfd GC if minor-fault feature isn't available am: 856856e40d

Original change: https://android-review.googlesource.com/c/platform/art/+/2335766

Change-Id: Id28f30fbdcfc5a116edc8c635ce1108d85ec2917
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>