feat: add BookingWagonsPanel component for displaying allocated wagons in booking details

- Implemented BookingWagonsPanel to show allocated wagons, their containers, and export functionality.
- Integrated the new panel into BookingRequestDetailPage and BookingRequestsPage.
- Enhanced wagon cancellation modal to support rebooking of wagon cancellations with partner units.
- Updated API service to include a method for downloading wagons workbook.
- Modified types and constants to accommodate new features related to wagons.
- Adjusted various components and pages to ensure compatibility with the new wagon-related functionality.

apps/edr-freight-web/backoffice/src/services/bookings.service.ts

@@ -810,6 +810,14 @@ export const bookingsService = {
     return ensurePdfBlob(response.data as Blob);
   },
 
+  /** The Wagons tab's Excel export — customer name plus one row per wagon. */
+  downloadWagonsWorkbook: async (id: string): Promise<Blob> => {
+    const response = await client.get(B.WAGONS_EXPORT(id), {
+      responseType: "blob",
+    });
+    return response.data as Blob;
+  },
+
   getDjClearanceQueue: async (): Promise<BookingDetail[]> => {
     const response = await client.get(B.CLEARANCE_DJ_QUEUE);
     return (unwrap(response.data) ?? []) as BookingDetail[];