OceanBase 数据库 V3.x 版本中读引用计数泄露，导致删除列时报错-4694，check drop column failed 的原因和解决方法

[2024-08-23 13:40:49.597848] WARN [SERVER] check_frozen_version (ob_service.cpp:1409) [478547][0][xxxxx-xxxxx-xxxxx-xxxxx] [lt=16] [dc=0] last merged version not match(ret=-4694, arg={frozen_version:988}, last_merged_version=980)
observer.log.20240826175839:[2024-08-26 17:50:54.297327] ERROR [STORAGE.TRANS] wait_all_trans_clear (ob_trans_ctx_mgr.cpp:2730) [479746][0][Y0-0000000000000000-0-0] [lt=11] [dc=0] wait all trans clear error(ret=-4023, ctx_mgr={this:0x7f426bc24b30, partition:{tid:1181974999923717, partition_id:0, part_cnt:0}, state:5, ctx_type:2, read_only_count:1, active_read_write_count:0, total_ctx_count:1, restore_snapshot_version:-1, last_restore_log_id:18446744073709551615, last_restore_log_ts:-1, uref:1073741823}) BACKTRACE:0xfcf2ec0 0x582a58f 0x586b87f 0x586b4bf 0x586b378 0xb6c0266 0xb605b38 0xb60587d 0xb619a31 0xb8d2515 0xadc8abf 0xadc96de 0xbb2a9fc 0xbb2b318 0xb07bd66 0xb07b01e 0x5978284 0xfbc7bc3 0xfbc7a1f 0xfe6a8af