(0.37) Invoke VirtualThread J9Hooks after releasing VirtualThread List Mutex #16857
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The VirtualThread J9Hooks trigger callbacks which can utilize JVMTI
RawMonitors. The usage of JVMTI RawMonitors can conflict with the
J9JavaVM->liveVirtualThreadListMutex and lead to deadlocks. So,
these J9Hooks should be invoked after the liveVirtualThreadListMutex
is released to avoid deadlocks.
Related: #16826
Backport of #16856