Localize market dropdown current-site name to the viewing locale

[JesseWynants]

Follow-up to #1458.

Problem

In the market dropdown, the current market's label used newsroom.display_name — the default-locale newsroom name. So on the English version of a site it showed the default name (e.g. "België") instead of the translated one ("Belgium").

Fix

Use the current locale's company_information.name (the same per-locale newsroom name the header uses for the site title via language.company_information), falling back to display_name/name. This name also feeds the shared brand-prefix stripping, so the localized country label comes out clean (e.g. "Belgium" / "België").

const currentNewsroomName =
    languages.find((lang) => lang.code === localeCode)?.company_information.name ||
    newsroom.display_name ||
    newsroom.name;

Known limitation

Peer market names still use their default display_name — the hub member/sibling data (newsroomHub.list / newsroom.hub) doesn't carry per-locale names, so localizing peers would require a separate language fetch per peer. Out of scope here; happy to follow up if we want peers localized too.

Verification

• tsc --noEmit passes.
• Note: couldn't show a visual diff on the test hub since it only has one culture (English); the change mirrors the established Header.tsx pattern (information.name || newsroom.display_name).

[fgyimah]

👍🏾