Look this example with the pointer Event, i think you can get that url value in JavaScript and then add the value from the url to the PopUp in the Right Corner.
Code to get the value from url:
var uri = window.location.href;
var query = uri.substring(uri.indexOf("?") + 1, uri.length);
var queryObject = ioQuery.queryToObject(query);
JavaScript Event Pointer Example
Access features with pointer events | ArcGIS API for JavaScript 4.6