[release-11.4.2] Auth: Add early return if `auth_token` is in the URL for JWT auth (#100580)

Auth: Add early return if `auth_token` is in the URL for JWT auth (#100539)

* Add early return

* Update public/app/app.ts

Co-authored-by: Victor Cinaglia <victor@grafana.com>

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Co-authored-by: Victor Cinaglia <victor@grafana.com>
(cherry picked from commit 5a6d2f2e49)

public/app/app.ts

@@ -393,6 +393,7 @@ function handleRedirectTo(): void {
   if (queryParams.has('auth_token')) {
     // URL Login should not be redirected
     window.sessionStorage.removeItem(RedirectToUrlKey);
+    return;
   }
 
   if (queryParams.has(redirectToParamKey) && window.location.pathname !== '/') {