seata 达梦数据库 XA模式适配问题

### Check Ahead

- [x] I have searched the [issues](https://github.com/seata/seata/issues) of this repository and believe that this is not a duplicate.

- [ ] I am willing to try to implement this feature myself.

### Why you need it?

请协助解答，seata适配达梦数据库，XA模式，2.6版本是否已经支持，达梦的驱动版本有要求吗

### How it could be?

_No response_

### Other related information

_No response_

The issue names Seata 2.6, XA mode, and Dameng Database but provides no file, test, or implementation entry point. Start by checking existing compatibility documentation and XA-related discussions for Dameng support and driver requirements. Done means documenting a confirmed support status and any required driver version.

Written by the indexing model from the issue text.