业务表 分库 提示ERR-CODE: [TDDL-4603][ERR_ACCROSS_DB_TRANSACTION]

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

### Ⅰ. Issue Description

### Ⅱ. Describe what happened

If there is an exception, please attach the exception trace:

```
Just paste your stack trace here!
```

### Ⅲ. Describe what you expected to happen

### Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. xxx
2. xxx
3. xxx

Minimal yet complete reproducer code (or URL to code):

### Ⅴ. Anything else we need to know?

### Ⅵ. Environment:

- JDK version(e.g. `java -version`):
- Seata client/server version:
- Database version:
- OS(e.g. `uname -a`):
- Others:

The issue body contains only the cross-database transaction error title and an empty template; start by reading the eight comments and collecting the missing stack trace, Seata/JDK/database versions, and reproduction steps. Done means a minimal reproducer and expected behavior are documented, with the reported error's resolution verified.

Written by the indexing model from the issue text.