Draft: refactor: Ensure snake_case for field expectation in grapqhl tests

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What does this MR do and why?

Implement a rubocop cop for this (if possible)

refactor: Ensure snake_case for field expectation in grapqhl tests

!156741 (comment 1985809987)

Changelog: other

🛠 with ❤ at Siemens

MR acceptance checklist

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MR Checklist (@gerardo-navarro)

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the javascript style guides
• Conforms to the database guides

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Only backend . No frontend changes.

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