Fix require-string-literal-i18n-helpers error

What does this MR do?

This MR fixes require-string-literal-i18n-helpers eslint offenses in app/assets/javascripts/vue_shared/components/filtered_search_bar/constants.js

#339502 (closed)

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Does this MR meet the acceptance criteria?

Conformity

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• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.

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Security

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• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Related to #339502 (closed)