Core/AreaTrigger: Handle unit exit after OnRemove hook has been called

src/server/game/Entities/AreaTrigger/AreaTrigger.cpp

@@ -88,11 +88,11 @@ void AreaTrigger::RemoveFromWorld()
         if (Unit* caster = GetCaster())
             caster->_UnregisterAreaTrigger(this);
 
+        _ai->OnRemove();
+
         // Handle removal of all units, calling OnUnitExit & deleting auras if needed
         HandleUnitEnterExit({});
 
-        _ai->OnRemove();
-
         WorldObject::RemoveFromWorld();
 
         if (_spawnId)