MDEV-29988: (spider fix) Major performance regression with 10.6.11

Make Item_direct_ref_to_item transparent for Spider

storage/spider/spd_db_conn.cc

@@ -8853,6 +8853,12 @@ int spider_db_print_item_type(
   DBUG_ENTER("spider_db_print_item_type");
   DBUG_PRINT("info",("spider COND type=%d", item->type()));
 
+  if (item->type() == Item::REF_ITEM &&
+      ((Item_ref*)item)->ref_type() == Item_ref::DIRECT_REF)
+  {
+    item= item->real_item();
+    DBUG_PRINT("info",("spider new COND type=%d", item->type()));
+  }
   switch (item->type())
   {
     case Item::FUNC_ITEM: