Reorder kThreadWaitLock

In aosp/814976, a new lock level was created for thread wait locks,
which were previously at kDefaultMutexLevel. I missed that another lock,
kMarkSweepMarkStackLock, was acquired while holding the thread wait
lock. This corrects the ordering.

Bug: 119755302
Change-Id: Ib55228d2759e281dc0f3a2177a538fd9adfec163