fix: order bulk-delete had zero confirmation

Bulk-delete button called facade.applyBulkDelete() with no gate.
Added app-confirm-dialog, same pattern as products/categories.

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

src/app/i18n/translations.ts

@@ -1359,6 +1359,8 @@ export interface Translations {
     };
   };
   adminOrders: {
+    bulkDeleteTitle: string;
+    confirmBulkDelete: string;
     back: string;
     search: string;
     export: string;