feat: Set default locale without locale prefix in pathname

[karolkarolka]

The default locale is now "en-US" assigned to the storefront domain without locale prefix ("/"), all other supported locales are accessible under prefixed locale pathname ("e.g. "/gb").

Pull Request Checklist

• Test the changes locally to ensure they work as expected.
• Document the testing process and results in the pull request description. (Screen recording, screenshot etc)
• Include new tests for any new functionality or significant changes.
• Ensure that tests cover edge cases and potential failure points.
• Document the impact of the changes on the system, including potential risks and benefits.
• Provide a rollback plan in case the changes introduce critical issues.
• Update documentation to reflect any changes in functionality.

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Name	Status	Preview	Comments	Updated (UTC)
nimara-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 11, 2024 1:14pm
nimara-ecommerce	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 11, 2024 1:14pm

[soniaklimas]

It resolved issue with checkout while changing locale, niceeee 🚀