子sku分摊库容需求的时候，优先使用主sku的库容

AutoTurnOver.DB/purchase_advise.cs

@@ -654,7 +654,7 @@ and t1.quantity_init_advise>=0 and ( t3.buyer_name in ('张莹霞1') and t1.ware
                     {
                         foreach (var item in mother_datas)
                         {
-                            var itemMaps = maps.Where(s => s.mother_sku_warehouse_code == item.bailun_sku_warehouse_code).ToList();
+                            var itemMaps = maps.Where(s => s.mother_sku_warehouse_code == item.bailun_sku_warehouse_code).OrderByDescending(s => s.is_main).ToList();
                             if (itemMaps != null && itemMaps.Count >= 1)
                             {
                                 // 查询这些子sku的库容