Address spec violations for the admin job table spec

What does this MR do and why?

Addresses spec violations for the spec/frontend/pages/admin/jobs/components/table/admin_job_table_app_spec.js spec to help with the Vue 3 migration

#413391 (closed)

Screenshots or screen recordings

N/A

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

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