exclude self from container clash

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

@@ -673,8 +673,16 @@ export const contractsService = {
   validateShipment: (
     id: string,
     payload: Freight.CreateBookingUnderContractDto,
+    // Completion/resubmit preview: exclude this booking's own containers from
+    // the same-train clash check.
+    excludeBookingId?: string,
   ) =>
-    postContract<ShipmentValidation>(C.VALIDATE_SHIPMENT(id), payload),
+    postContract<ShipmentValidation>(
+      excludeBookingId
+        ? `${C.VALIDATE_SHIPMENT(id)}?bookingId=${excludeBookingId}`
+        : C.VALIDATE_SHIPMENT(id),
+      payload,
+    ),
 
   /** Remaining bookable quantity per cargo line (GENERAL draw-down cap). */
   getCapacity: async (id: string): Promise<Freight.ContractCapacityLine[]> => {