auto sort for BaseMapper.listOrder when entity creatable or updatable

src/main/java/com/imyeyu/spring/util/SQLProvider.java

@@ -64,6 +64,13 @@ public class SQLProvider {
 				sql.append(", ");
 			}
 			sql.deleteCharAt(sql.length() - 2);
+		} else {
+			if (meta.canCreate && !meta.canUpdate) {
+				sql.append("created_at DESC");
+			}
+			if (meta.canCreate && meta.canUpdate) {
+				sql.append("COALESCE(updated_at, created_at) DESC");
+			}
 		}
 		return sql.append(" LIMIT %s, %s".formatted(offset, limit)).toString();
 	}
@@ -258,6 +265,9 @@ public class SQLProvider {
 		/** 只读的列名字段名映射，Map<列名，字段名> */
 		final List<FieldColumn> fieldColumnList;
 
+		/** true 为可创建 */
+		final boolean canCreate;
+
 		/** true 为可更新 */
 		final boolean canUpdate;
 
@@ -313,6 +323,7 @@ public class SQLProvider {
 			this.selectAllClause = selectAllClause.substring(0, selectAllClause.length() - 1);
 			this.idFieldColumn = idFieldColumn;
 			this.fieldColumnList = List.of(fieldColumnList.toArray(new FieldColumn[0])); // 转为只读
+			canCreate = Creatable.class.isAssignableFrom(entityClass);
 			canUpdate = Updatable.class.isAssignableFrom(entityClass);
 			canDelete = Deletable.class.isAssignableFrom(entityClass);
 			canDestroy = Destroyable.class.isAssignableFrom(entityClass);