fix(QuickBooks Online Node): Add qty to quickbooks invoice line details (#13602)

packages/nodes-base/nodes/QuickBooks/GenericFunctions.ts

@@ -329,9 +329,14 @@ export function processLines(this: IExecuteFunctions, lines: IDataObject[], reso
 					TaxCodeRef: {
 						value: line.TaxCodeRef,
 					},
+					Qty: line.Qty,
 				};
+				if (line.Qty === undefined) {
+					delete (line.SalesItemLineDetail as IDataObject).Qty;
+				}
 				delete line.itemId;
 				delete line.TaxCodeRef;
+				delete line.Qty;
 			}
 		}
 	});