[release-17.0] backport mysqlctl CLI compatibility fix to 17.0

[ajm188]

Description

This backports 514c946 to 17.0, which is needed so upgrade/downgrade tests (upgrading to 18.0 on 17.0) work properly.

Related Issue(s)

#13946

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on the CI
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

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