Purpose of this pull request

Just like starrocks, we change the default value of create table template. To make sure to primary keys always in fisrt of fields.

Does this PR introduce any user-facing change?

Yes, the default value changed.

How was this patch tested?

exist test.

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• Update the release-note.