Merged PR 2315: Auth stabilistatiion and hardening

Related work items: #23020

components/myportal.js

@@ -2,7 +2,6 @@ import { signOut } from "next-auth/react";
 import useTranslation from "next-translate/useTranslation";
 import Link from "next/link";
 import { useRouter } from "next/router";
-import { destroyCookie } from "nookies";
 import TimeOut from "../components/timeout";
 import AwaitingSubmissionFromBlob from "./myportal/awaitingsubmissionfromblob";
 
@@ -17,6 +16,7 @@ import MySubmittedReps from "./myportal/mysubmittedrepresentations";
 import ServiceBanner from "./myportal/servicebanner";
 import { JSONPath as jsonpath } from "jsonpath-plus";
 import transLookup from "../data/lookuptranslations.json";
+import { performPortalSignOut } from "../lib/auth/sessionClient";
 
 const MyPortal = (props) => {
     const { showFileUpload, showLoginCheck, docsOffline } = props;
@@ -26,15 +26,7 @@ const MyPortal = (props) => {
     const { locale } = router;
 
     const handleLogout = () => {
-        console.info("////////////\n" + "logout" + "\n////////////");
-        (window.localStorage.clear(),
-            destroyCookie(null, "next-auth.csrf-token", { path: "/" }),
-            destroyCookie(null, "next-auth.callback-url", { path: "/" }),
-            destroyCookie(null, "pedw_locale", { path: "/" }),
-            destroyCookie(null, "pinsUser", { path: "/" }),
-            signOut({
-                callbackUrl: locale == "cy" ? "/cy/allgofnodi" : "/logout"
-            }));
+        performPortalSignOut({ locale, signOutFn: signOut });
     };
 
     const isLPA =