Disable suspend on shutdown during shutdown finalization

Disable suspend on shutdown during shutdown finalization

The main thread does not time out waiting for the finalizer thread to complete during shutdown. Cases examined had the main thread blocked waiting for the finalizer thread to complete its work. The finalizer thread was blocked on either the "waiting for GC completion" event or one of the the GC spinlocks. Another thread was blocked for shutdown after entering the spinlock while allocating, or during GC. Allowing other threads to suspend for shutdown could cause the finalizer thread to block indefinitely, leading to a deadlock.