Allow ui_locale to be pass to login page

[wizardlyhel]

WHY are these changes introduced?

Fixes #1835

WHAT is this pull request doing?

Allow locale to be passed to customer account login page

HOW to test your changes?

1. Update account_.login.tsx with

   export async function loader({request, context}: LoaderFunctionArgs) {
     return context.customerAccount.login({uiLocales: 'JA'});
   }

2. Locally run your project and go to sign n page

Expected: You should see the login interface in Japanese.

Post-merge steps

Checklist

• I've read the Contributing Guidelines
• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've added a changeset if this PR contains user-facing or noteworthy changes
• I've added tests to cover my changes
• I've added or updated the documentation

[shopify]

Oxygen deployed a preview of your hl-pass-language-to-caapi branch. Details:

Storefront	Status	Preview link	Deployment details	Last update (UTC)
vite	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM
custom-cart-method	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM
third-party-queries-caching	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM
optimistic-cart-ui	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM
subscriptions	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM
skeleton	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 13, 2024 6:34 PM

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