fix(Google Sheets Node): Return empty response if no rows updated (#6407)

packages/nodes-base/nodes/Google/Sheet/v2/actions/sheet/update.operation.ts

@@ -377,6 +377,9 @@ export async function execute(
 	if (nodeVersion < 4 || dataMode === 'autoMapInputData') {
 		return items;
 	} else {
+		if (!updateData.length) {
+			return [];
+		}
 		return this.helpers.returnJsonArray(mappedValues);
 	}
 }