Fix lucene codec after lucene version bumped to 9.12

[navneet1v]

Description

Fix lucene codec after lucene version bumped to 9.12 Currently the version bump has happened only for main branch hence we are not doing any backport here.

This change includes:

1. Bumping up the Lucene Codec to 912.
2. New KNN9120Codec class added.
3. Changes in the NativeEngineFieldVectorsWriter to pass the FlatFieldVectorsWriter since in Lucene 912, the capability of FlatFieldVectorsWriter adding the vectorValue to a passed VectorFieldWriter, the VectorFieldWriters who are using the FlatFieldVectorsWriter have to call the addValue function of FlatFieldVectorsWriter. Ref: Reduce heap usage for knn index writers apache/lucene#13538
4. Set Compress flag for Lucene SQ bits > 4 to false. Ref: https://github.com/apache/lucene/blob/branch_9_12/lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99ScalarQuantizedVectorsFormat.java#L113-L116.

Related Issues

Resolves #2193

Check List

• New functionality has been documented.
• Commits are signed per the DCO using --signoff.

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[navneet1v]

Seems like the min distribution is still not updated with the lucene version. Hence the builds are failing. Will check on Jenkins.

Ref: https://build.ci.opensearch.org/view/all/job/distribution-build-opensearch/

[navneet1v]

Conversation happening with the build team on this thread: https://opensearch.slack.com/archives/C04UTNM338A/p1728341414662579

[navneet1v]

On further checking and talking to build team we found out that lucene upgrade was merged in opensearch in last 12hrs, which updated the maven repo(which happens with every merge in main branch) but the min distribution runs once in 24hrs hence min distribution is not updated.

Thanks @gaiksaya for helping here. A new build is triggered ref: https://build.ci.opensearch.org/blue/organizations/jenkins/publish-opensearch-min-snapshots/detail/publish-opensearch-min-snapshots/1818/pipeline/ Once it is completed I will re-run the GH actions.

[navneet1v]

On doing deep-dive on the failed ITs I found out that lucene has changed the way they were using the FlatFieldVectorWriter. This will require more changes in the code to ensure that tests are passing since the changes are in the indexing path. I am working on the fix for this. Will try to raise a PR by today.

Ref: apache/lucene#13538

Earlier the Lucene99FlatVectorsWriter.FieldWriter we calling the KNNFieldWriter as a delegate. Now it is not calling anymore, hence we need to call Lucene99FlatVectorsWriter.FieldWriter.addValue from out NativeEngineFieldsVectorWriter.addValue