Improve spec with plain string

What does this MR do and why?

This addresses this comment:

how about not importing them at all? Asserting against a plain string = stronger test. If someone or something changes the i18n string, a test will fail

Screenshots or screen recordings

There is no UI/UX changes

How to set up and validate locally

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

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #377439 (closed)