Core/PacketIO: Fixed SMSG_UPDATE_OBJECT packets going missing for new items

Port From (https://github.com/TrinityCore/TrinityCore/commit/48bd9698f88ade01209c9287ff38005900630ed3)

Source/Game/Entities/Item/Item.cs

@@ -1317,11 +1317,16 @@ namespace Game.Entities
             base.ClearUpdateMask(remove);
         }
 
-        public override void AddToObjectUpdate()
+        public override bool AddToObjectUpdate()
         {
             Player owner = GetOwner();
             if (owner)
+            {
                 owner.GetMap().AddUpdateObject(this);
+                return true;
+            }
+
+            return false;
         }
 
         public override void RemoveFromObjectUpdate()

Source/Game/Entities/Object/WorldObject.cs

@@ -724,10 +724,7 @@ namespace Game.Entities
         public void AddToObjectUpdateIfNeeded()
         {
             if (IsInWorld && !m_objectUpdated)
-            {
+                m_objectUpdated = AddToObjectUpdate();
-                AddToObjectUpdate();
-                m_objectUpdated = true;
-            }
         }
 
         public virtual void ClearUpdateMask(bool remove)
@@ -2778,9 +2775,10 @@ namespace Game.Entities
             ClearUpdateMask(false);
         }
 
-        public virtual void AddToObjectUpdate()
+        public virtual bool AddToObjectUpdate()
         {
             GetMap().AddUpdateObject(this);
+            return true;
         }
 
         public virtual void RemoveFromObjectUpdate()