Corrected some translations

[snipe]

This handles a few additional localization issues.

[what-the-diff]

PR Summary

• Introduction of new translation key
  Added a new translation key 'model_already_attached' for better localization support.

• Middleware update in API group
  Inserted '\App\Http\Middleware\CheckLocale::class' in the API middleware group to ensure requests are handled in the correct locale.

• Flash message updates in store method
  Updated error and success flash messages in the store() method, this will now provide clearer user feedback during the checkout process.

• Attribute modification in transformAsset method
  Altered the 'age' attribute in the transformAsset() method to improve the representation of asset information.

• Translation updates for user warnings and asset handling
  Amplified localization by updating 'unaccepted_profile_warning' and 'assets_in_var' translations for better understanding across different regions.

• User interface enhancements in several views
  Refreshed the titles of sections in 'categories/view' and 'settings/logins' views, and refined options in 'hardware/checkin' and 'hardware/checkout' views for a more intuitive user experience.

• Translation tune-up in printable user details
  Polished 'name' and 'signature' translations in the user print view to improve readability of printed user details.