Add the i18n message to the WikibaseLexeme messages list in en.json and qqq.json. These messages should be passed them down into the vue app via the ResourceLoader.
The copy as taken from the parent task: "This Item has an unrecognized language code. Please select one below."
Acceptance Criteria:
- All required translation messages are included in en.json and qqq.json.
- Message keys are added to WikibaseLexeme.resources.php