[Backport 2.x] Adds index and query BWC tests for missing engines (#2035)

[shatejas]

This is done to make sure that KNN80DocsValueConsumer code path is hit

Signed-off-by: Tejas Shah shatejas@amazon.com (cherry picked from commit e3200260e7360f6ff90600535ac759d11cb1fefb)

Backport of https://github.com/opensearch-project/k-NN/pull/2035

Check List

• [x] New functionality includes testing.
• [ ] New functionality has been documented.
• [ ] API changes companion pull request created.
• [x] Commits are signed per the DCO using --signoff.
• [ ] Public documentation issue/PR created.

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