8274925: Shenandoah: shenandoah/TestAllocHumongousFragment.java test failed on lock rank check

Reviewed-by: shade

Author: zhengyu123

src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp

@@ -47,8 +47,8 @@
 
 ShenandoahControlThread::ShenandoahControlThread() :
   ConcurrentGCThread(),
-  _alloc_failure_waiters_lock(Mutex::safepoint, "ShenandoahAllocFailureGC_lock", true),
-  _gc_waiters_lock(Mutex::safepoint, "ShenandoahRequestedGC_lock", true),
+  _alloc_failure_waiters_lock(Mutex::safepoint-1, "ShenandoahAllocFailureGC_lock", true),
+  _gc_waiters_lock(Mutex::safepoint-1, "ShenandoahRequestedGC_lock", true),
   _periodic_task(this),
   _requested_gc_cause(GCCause::_no_cause_specified),
   _degen_point(ShenandoahGC::_degenerated_outside_cycle),