fix(auth): align session lifecycle with Keycloak

src/lib/authToken.ts

@@ -42,6 +42,9 @@ export const getAccessToken = async () => {
     setAccessToken(null);
   }
   const session = await getSession();
+  if (session?.error) {
+    return null;
+  }
   const token = typeof session?.accessToken === "string" ? session.accessToken : null;
   if (token && !isTokenExpired(token)) {
     setAccessToken(token);