[Bug] [connector-jdbc-kingbase]Error in Jdbc Source with Kingbase8: Unsupported Field Data Types (e.g., smallint) during Catalog Table Lookup #8866

[t1234849]

Purpose of this pull request

Kingbase Database Column Type Mapped as Standard SQL Types (e.g., int2 → smallint, int4 → int, int8 → bigint) in JDBC Mapping
bug：#8869

Does this PR introduce any user-facing change?

How was this patch tested?

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 plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config
• Update the release-note.