mysql 带虚拟列的table在删除数据的时候，回滚失败

Branch session rollback failed and try again later xid = 127.0.0.1:8091:130679683661434880 branchId = 130679685964107776 The value specified for generated column 'aa' in table 'xx' is not allowed.

### Ⅵ. Environment:

- JDK version : .8
- OS : centos 7
- Others: seata version 1.4.1

Start by reproducing the rollback failure described for Seata 1.4.1 with MySQL and a table containing the generated column `aa`. Trace the rollback path around the reported generated-column error; done means deleting data can roll back successfully without the branch retry failure.

Written by the indexing model from the issue text.