Don't wait with mutator lock

Don't call MakeInitializedClassesVisiblyInitialized() with wait true,
while we hold the mutator lock. It's unclear this causes real problems,
but our debug code complains because we shouldn't wait while holding
a lock.

Bug: 243086427
Test: Build and boot AOSP
Change-Id: I48ef95ef554d51ae2bd98d79b8861a1044d5c677