fix(storefront): TRAC-366 audit and fix Stencil theme remote API calls for multi-language subfolder support

[bc-yevhenii-buliuk]

What?

This PR adds fixes to ensure selected utils.api remote requests include the storefront locale prefix via context.secureBaseUrl, so the server returns localized HTML/strings on subfolder locales (/es, /fr, etc.).

Theme changes: pass baseUrl (context.secureBaseUrl) for localized remote calls.

File	Call	Remote endpoint	Purpose
product-details.js	productAttributes.optionChange	POST /remote/v1/product-attributes/{id}	PDP: changing options updates price, bulk-pricing HTML, availability messages, etc.
cart-item-details.js	productAttributes.optionChange	POST /remote/v1/product-attributes/{id}	Cart: edit line item modal — options / bulk-discount refresh
cart.js	productAttributes.configureInCart	GET /remote/v1/configure-options/{itemId}	Cart: open “configure product” modal (server-rendered HTML)
cart.js	productAttributes.optionChange	POST /remote/v1/product-attributes/{id}	Cart: same modal — purchasing_message / purchasable state
cart.js	cart.getItemGiftWrappingOptions	GET /remote/v1/gift-wrapping/{itemId}	Cart: gift-wrapping modal HTML
shipping-estimator.js	cart.getShippingQuotes	GET /remote/v1/shipping-quote	Cart: shipping quotes HTML (4th argument effective after stencil-utils supports requestOptions)

Requirements

• CHANGELOG.md entry added (required for code changes only)

Tickets / Documentation

• TRAC-366

Screenshots (if appropriate)

testing bundle on employee store

before:
PDP -> productOptionsChanged

cart -> configureInCart

cart -> optionChange

cart -> getItemGiftWrappingOptions

after:
PDP -> productOptionsChanged

cart -> configureInCart

cart -> optionChange

cart -> getItemGiftWrappingOptions