♻️ Update localized enums to send locale aware messages

[esizer]

♻️ Debt/Refactor

Update the localized enums to only send the current locale as a label.

🕵️ Details

Our localized enums must send both English and French strings due to a limitation of laravel not being aware of the clients current locale. This limitation will be lifted after https://github.com/GCTC-NTGC/gc-digital-talent/issues/11336 so we would like to start sending just the current locale.

[!NOTE] We should maintain the ability to get both languages at once since we still need this for snapshots since that data is static.

🙋‍♀️ Proposed Solution

• Update the HasLocalization trait to send a single, translated string based on laravels set locale
• Update the types registered with graphql so they return the current locale string in addition to the existing data
• Update our client code to use the single string where appropriate

✅ Acceptance Criteria

• [ ] Localized enums can get the label for a case based on laravels locale
• [ ] You can retrieve a single string for labels from graphql
• [ ] PHPUnit test to confirm you get the expected string back
• [ ] Client updated where necessary

🛑 Blockers

### Blocked By
- [ ] https://github.com/GCTC-NTGC/gc-digital-talent/issues/11336

[github-actions[bot]]

Status: Error :warning:

Issues blocking this PR:

• NaN :warning: Issue/PR not found

  ---

  This comment was automatically written by the Blocking Issues bot, and this PR will be monitored for further progress.