fix(editor): Fix issue preventing execution preview loading when in an iframe (#5817)

packages/editor-ui/src/views/NodeView.vue

@@ -3885,8 +3885,8 @@ export default mixins(
 					this.bindCanvasEvents();
 				} catch {} // This will break if mounted after jsplumb has been initiated from executions preview, so continue if it breaks
 				await this.initView();
-				if (window.top) {
-					window.top.postMessage(
+				if (window.parent) {
+					window.parent.postMessage(
 						JSON.stringify({ command: 'n8nReady', version: this.rootStore.versionCli }),
 						'*',
 					);