- 修复 AggregateRoot 自动 Attach 问题；

Extensions/FreeSql.Extensions.AggregateRoot/AggregateRootRepository/AggregateRootRepository.cs

@@ -196,9 +196,11 @@ namespace FreeSql
         protected void SelectAggregateRootTracking(object list)
         {
             if (list == null) return;
-            var ls = list as IEnumerable<TEntity>;
-            if (ls == null)
+            if (list is IEnumerable<TEntity> entities)
             {
+                Attach(entities);
+                return;
+            }
             var ie = list as IEnumerable;
             if (ie == null) return;
             var isfirst = true;
@@ -217,8 +219,6 @@ namespace FreeSql
                 if (item is TEntity item2) Attach(item2);
                 else return;
             }
-                return;
-            }
         }
         //void SelectAggregateRootNavigateReader<T1>(ISelect<T1> currentQuery, Type entityType, string navigatePath, Stack<Type> ignores)
         //{