fix: localize language switcher aria-labels and BreadcrumbList breadcrumbs for all non-English committee report pages

[Copilot]

All 13 non-English committee report pages had hardcoded English values for the language switcher aria-label and JSON-LD BreadcrumbList item names, breaking accessibility and structured data semantics for non-English locales.

Changes

• Language switcher aria-label — updated to language-specific values from LANG_SWITCHER_ARIA_LABELS (constants.ts) for all 13 pages (ar, da, de, es, fi, fr, he, ja, ko, nl, no, sv, zh):

<!-- before (all non-English pages) -->
<nav class="language-switcher" role="navigation" aria-label="Language versions">

<!-- after (example: Arabic) -->
<nav class="language-switcher" role="navigation" aria-label="إصدارات اللغة">

• BreadcrumbList names — updated "Home" and "News" to localized equivalents from BREADCRUMB_TRANSLATIONS (constants.ts) for all non-English pages:

// before
{ "position": 1, "name": "Home", ... },
{ "position": 2, "name": "News", ... }

// after (example: German)
{ "position": 1, "name": "Startseite", ... },
{ "position": 2, "name": "Nachrichten", ... }

Dutch home stays as "Home" — matching the nl entry in BREADCRUMB_TRANSLATIONS. English page is unchanged.

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