fix(admin): polish reviews

Same select-all/row-checkbox accessible-name gap in table view; grid
view already had aria-label on its row checkbox (customer name),
table view was the gap. New adminModeration.selectAllRows key added
across en/ru/hy.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/i18n/ru.ts

@@ -1214,6 +1214,7 @@ export const ru: Translations = {
   },
   adminModeration: {
     search: 'Поиск по клиенту, товару или тексту отзыва…',
+    selectAllRows: 'Выбрать все отзывы',
     allStatuses: 'Все статусы',
     allRatings: 'Все оценки',
     rating: 'Оценка',