Core/Misc: Rename SetXXXFlags updatefield functions to ReplaceAllXXXFlags

Port From (https://github.com/TrinityCore/TrinityCore/commit/4eba9786708dd3b22d9053c1a14eac7e6d03242e)

Source/Game/Handlers/ItemHandler.cs

@@ -757,7 +757,7 @@ namespace Game
             }
 
             item.SetGiftCreator(GetPlayer().GetGUID());
-            item.SetItemFlags(ItemFieldFlags.Wrapped);
+            item.ReplaceAllItemFlags(ItemFieldFlags.Wrapped);
             item.SetState(ItemUpdateState.Changed, GetPlayer());
 
             if (item.GetState() == ItemUpdateState.New) // save new item, to have alway for `character_gifts` record in `item_instance`

Source/Game/Handlers/SpellHandler.cs

@@ -223,7 +223,7 @@ namespace Game
 
             item.SetGiftCreator(ObjectGuid.Empty);
             item.SetEntry(entry);
-            item.SetItemFlags((ItemFieldFlags)flags);
+            item.ReplaceAllItemFlags((ItemFieldFlags)flags);
             item.SetMaxDurability(item.GetTemplate().MaxDurability);
             item.SetState(ItemUpdateState.Changed, GetPlayer());