Fix LaborResource breadcrumb/heading to show 'Catalog manopere'

getPluralModelLabel now uses nav.label.Norme-ore (already translated
to 'Catalog manopere'/'Каталог работ') so breadcrumb and page heading
match the sidebar navigation label.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lang/ru.json

@@ -2385,6 +2385,7 @@
     "lucrări caroserie": "кузовные работы",
     "lucrări terți": "работы субподрядчиков",
     "manopere": "работ",
+    "manoperă": "работа",
     "mașini": "машины",
     "mașină": "машина",
     "mediu": "средне",