Fix Stackdriver list operator format handling

[KristoferFangrat]

closes: #73431

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[boring-cyborg]

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[shahar1]

Welcome to Apache Airflow!

Please note that this PR competes with #73434. This is a legitimate case under our contribution guidelines, and I’ll merge the first PR that fully addresses the issue successfully. However, If one submission substantially copies the other - priority will go to the earlier PR.

Feel free to work on other open issues labeled good first issue.

[KristoferFangrat]

Thank you for the feedback, I see that PR #73434 already addresses this. I’ll focus on other issues instead.