[Feature]: 【MySQL兼容】【8.0】【obmysql_table】创建分区表，更改分区表分区段列名，ob正常修改，mysql8.0报错不支持更改

[lyukun]

【OB版本】
observer (OceanBase 4.0.0.0)
REVISION: 1-1eb57bdee7e35d439dc12c24971dd43f11dd2246
BUILD_BRANCH: HEAD
BUILD_TIME: Aug 17 2022 19:56:25
BUILD_FLAGS: RelWithDebInfo
BUILD_INFO: jenkins-oceanbase_build_master_7u-B13240
【前置条件】
【复现步骤】
CREATE TABLE t1(a bigint, b date)partition by range columns(b)
(
partition part_1 values less than ('2016-09-01'),
partition part_2 values less than ('2020-09-01')
);
INSERT INTO t1 VALUES(1,'2010-11-21');
INSERT INTO t1 VALUES(2,'2011-12-23');
INSERT INTO t1 VALUES(3,'2018-12-23');
ALTER TABLE t1 CHANGE COLUMN b bb VARCHAR(50) AFTER a;
【实际结果】
ob4.0

mysql8.0 正常查询