We have a bunch of STS additions in zRelocate.cpp. The guidance that I've got from Erik is that those are not needed and may in-fact cause deadlocks. We have, indeed, observed deadlocks in GHA.

Those should be removed, and we should use the GC/monitor-deflation sync improvement from JDK-8314551 instead.

In addition, ZObjArrayAllocator::initialize() installs a 'naked' mark prototype into objects at the end. Those need to be prototype-headers with the appropriate Klass* bits for Lilliput.