Address offenses for the Vue 3 migration of the usage quotas spec

What does this MR do and why?

This addresses the offenses for the usage_quotas/app_spec.js file to help with the Vue 3 migration

#413363 (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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