CNDB-16886: Reject BM25 queries in validation when the coordinator is before EC (#2459)

[djatnieks]

Reject BM25 queries on Index.validate(ReadCommand) if the current
index version doesn't support them. That way they would be rejected on
the coordinator before execution, which is faster and produces a
descriptive error message, rather than the generic per-replica error
codes. The replicas still will do their own validation if the query gets
past the coordinator.

[djatnieks]

resolved trivial import conflict

[github-actions]

Checklist before you submit for review

• This PR adheres to the Definition of Done
• Make sure there is a PR and ticket in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits
• All new files should contain the IBM copyright header instead of the Apache License one (no DataStax copyright any longer)

[plpesvc-ds]

❌ Build ds-cassandra-pr-gate/PR-2483 rejected by Butler

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4 regressions found
See build details here

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Found 4 new test failures

Test	Explanation	Runs	Upstream
o.a.c.index.sai.cql.VectorCompaction100dTest.testOneToManyCompactionTooManyHoles[version=ec enableNVQ=false] ()	NEW	🔴🔴	0 / 30
o.a.c.index.sai.cql.VectorKeyRestrictedOnPartitionTest.partitionRestrictedWidePartitionBqCompressedTest[ca false] (compression)	REGRESSION	🔴🔴	2 / 30
o.a.c.index.sai.cql.VectorKeyRestrictedOnPartitionTest.partitionRestrictedWidePartitionBqCompressedTest[db false] (compression)	REGRESSION	🔵🔴	0 / 30
o.a.c.index.sai.cql.VectorSiftSmallTest.testMultiSegmentBuild[ed false] ()	NEW	🔴⚪	0 / 30

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Found 1 known test failures