You can run this js @SAncliff -
let resolved = 0;
window.addEventListener('message', event => {
let d = (typeof event.data === typeof "") ? JSON.parse(event.data) : event.data;
if(d.type === 'request-widget' && void 0 !== d.uuid && !resolved) {
resolved = 1;
$('#hs_cos_wrapper_widget_1627561115672 iframe').attr('src', $('#hubspot-messages-iframe-container iframe').attr('src'));
}
});
Of course, I hard coded your module id into that script so it would be better to add a class to your target iframe and use that instead, but just dropping this code into the header of your site should work for now.