[Fix][Oracle-CDC] Fix invalid split key when no primary key

[hailin0]

Purpose of this pull request

[Oracle-CDC] Fix invalid split key when no primary key

supported no primary-key & custom primary-key
#6209
#6216

Does this PR introduce any user-facing change?

No

How was this patch tested?

https://github.com/apache/seatunnel/pull/6209/files#diff-2ce020b038574b0a89a2903359d5806b57f2f672a144ad7dfdac74d231ac2ee8

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.

[Carl-Zhou-CN]

Why does he need to be removed? I think choosing it in the absence of a primary key is also a valid option.

[hailin0]

If you select this field as the split column, output the column to the sink.

[Carl-Zhou-CN]

ok,In a certain scenario, there can be a bug with the ROWID when a table has existing data before enabling logging, causing the inability to read snapshots.

[Carl-Zhou-CN]

LGTM

[hailin0]

ci pssed