- Update set_locale method to use around_action instead of before_action.
- Modify locale extraction logic to handle more cases, ensuring better fallback handling.
- Improve overall method clarity and maintainability by restructuring code.
This change enhances the localization process by providing a clearer
way to manage locale settings and ensures that it correctly falls back
to the default locale when necessary. It also resolves some edge cases
in locale extraction based on the HTTP_ACCEPT_LANGUAGE header.