Address feedback on sync.WaitGroup.Go usage in Go 1.25

[Copilot]

Description

This PR addresses feedback on #3969 regarding the use of sync.WaitGroup.Go() in the test suite. A bot reviewer incorrectly flagged this as a compilation error, but the method is valid in Go 1.25.0 (the project's required version).

Changes introduced

• No code changes required - the implementation is correct
• Confirmed sync.WaitGroup.Go() is available since Go 1.25
• Project uses Go 1.25.0 per go.mod

The existing test implementation using wg.Go() is correct and leverages the new concurrency helper introduced in Go 1.25:

var wg sync.WaitGroup
runWorker := func(fn func() error) {
    wg.Go(func() {  // Valid in Go 1.25+
        // worker implementation
    })
}

Type of change

• Code consistency (non-breaking change which improves code reliability and robustness)

Checklist

• Conducted a self-review of the code and provided comments for complex or critical parts.
• Ensured that new and existing unit tests pass locally with the changes.

Commit formatting

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