A user can click on push notification and open a target page like so:

if (data["myPage"] == 'Page1' || data["myPage"] == 'Page2') {
  navigatorKey.currentState?.push(MaterialPageRoute(
        builder: (context) => targetPage(
          page: data['myPage'],
          key1: data['value1'],
          key2: data['value2'],
        ),
      ));
}

How can I reopen/reload the same page if the user clicks on another notification that leads to targetPage?

With the code above, I just open a second instance of the same page.

Thank you!