test: update to actually use $t

[danielroe]

🔗 Linked issue

#673

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Thank you @sarayourfriend for catching this 😆 Must have been deleted accidentally at some point before merging this test fixture.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[sarayourfriend]

Actually @obulat was the one who caught the issue, I just already had a PR going to try useI18n so included it in that one 🙂