fix(editor): Add fallback for expression resolution in multi-output case (#9045)

Author: ivov

packages/editor-ui/src/composables/useWorkflowHelpers.ts

@@ -197,7 +197,12 @@ export function resolveParameter(
 	) {
 		runIndexCurrent = workflowRunData[contextNode!.name].length - 1;
 	}
-	const _executeData = executeData(parentNode, contextNode!.name, inputName, runIndexCurrent);
+	let _executeData = executeData(parentNode, contextNode!.name, inputName, runIndexCurrent);
+
+	if (!_executeData.source) {
+		// fallback to parent's run index for multi-output case
+		_executeData = executeData(parentNode, contextNode!.name, inputName, runIndexParent);
+	}
 
 	ExpressionEvaluatorProxy.setEvaluator(
 		useSettingsStore().settings.expressions?.evaluator ?? 'tmpl',