CNDB-12272: Fix SimpleClientPerfTest

[djatnieks]

What is the issue

SimpleClientPerfTest has been failing in CI since changes from CNDB-10759

What does this PR fix and why was it fixed

This change in SimpleClientPerfTest, updates the anonymous class Message.Codec<QueryMessage> to override the correct method, public CompletableFuture<Response> maybeExecuteAsync from QueryMessage, whose signature was changed as part of CNDB-10759.

Checklist before you submit for review

• Make sure there is a PR 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

[djatnieks]

SimpleClientPerfTest also needed the same fix

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1477 rejected by Butler

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1 new test failure(s) in 2 builds
See build details here

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Found 1 new test failures

Test	Explanation	Branch history	Upstream history
...c.VectorTypeTest.createIndexAfterInsertTest[ca]	regression	🔴🔵	🔵🔵🔵🔵🔵🔵🔵

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Found 7 known test failures