[Optimization][cdc] Optimize the automatic table creation of Doris for CDCSOURCE

### Search before asking - [x] I had searched in the [issues](https://github.com/DataLinkDC/dinky/issues?q=is%3Aissue) and found no similar optimization requirement. ### Description _No response_ ### Are you willing to submit a PR? - [x] Yes I am willing to submit a PR! ### Code of Conduct - [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)