Flutter Web - How to prevent iframe redirecting parent window?

Question

Below is the code I using for iframe

final widget = LayoutBuilder(
  builder: (context, constraints) {
    final iframe = IFrameElement()
      ..width = constraints.maxWidth.toString()
      ..height = constraints.maxHeight.toString()
      ..src = 'https://thirdpartyweb.com'
      ..style.border = 'none';

    // ignore: undefined_prefixed_name
    ui.platformViewRegistry.registerViewFactory(
      'iframe',
      (int viewId) => iframe,
    );

    final iframeWidget = HtmlElementView(
      key: UniqueKey(),
      viewType: 'iframe',
    );
    return iframeWidget;
  },
);

I am able to display my own appbar, iframe and bottom navigation bar, but when i try to navigate inside the iframe, it redirect the browser url. Is there anyway to apply

<iframe src="url" sandbox="allow-same-origin"></iframe>

so that it won't redirect the parent window? Or is there any other way to do this?