in js/needinfo.js [527:537]
function getRedirectToAccount() {
if (!document.getElementById('autofill-user-search').disabled &&
document.getElementById('autofill-user-search').value) {
return document.getElementById('autofill-user-search').value;
}
let to = document.getElementById("prompt-redirect-to-confirm-to").value;
if (!to.length) {
to = null;
}
return to;
}