WIP: Resolve "datetime_utility calls a missing lang export function from locale/index.js"

What does this MR do?

Corrects a typo to prevent a webpack warning being thrown

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Review
  • Has been reviewed by Frontend
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together
• Internationalization required/considered

What are the relevant issue numbers?

Closes #41248 (closed)