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/en.json

@@ -2385,6 +2385,7 @@
     "lucrări caroserie": "bodyshop jobs",
     "lucrări terți": "subcontract jobs",
     "manopere": "labors",
+    "manoperă": "labor item",
     "mașini": "vehicles",
     "mașină": "vehicle",
     "mediu": "medium",