fix(FE): Make expedition_vendor optional and nullable

src/types/api/purchase/purchase.d.ts

@@ -42,12 +42,12 @@ export type PurchaseItem = {
   expedition_vendor_name?: string | null;
   received_qty?: number | null;
   transport_per_item?: number | null;
-  expedition_vendor: {
+  expedition_vendor?: {
     id: number;
     name: string;
     alias: string;
     category: string;
-  };
+  } | null;
 };
 
 export type BasePurchase = {