[Feature][Connector-V2] Oracle Source support read TIMESTAMP_TZ

[yzeng1618]

https://github.com/apache/seatunnel/issues/9785

Purpose of this pull request

Add support for reading TIMESTAMP_TZ type in Oracle Source

Does this PR introduce any user-facing change?

No breaking change; stronger TIMESTAMP_TZ read/write consistency with graceful fallbacks for legacy drivers

How was this patch tested?

Unit tests: adjust type converter tests for Oracle to expect TIMESTAMP_TZ E2E: Oracle TIMESTAMP_TZ (part-1) added/fixed; compare offset-included strings for losslessness Build: modular build and local install; spotless formatting passed

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

[davidzollo]

Please solve conflicts.

[yzeng1618]

Please solve conflicts.

Okay, I'll resolve the conflicts first. You can check out this pull request first: https://github.com/apache/seatunnel/pull/10122