refactor: 2fa success log moved here

part of PRX-255 Adding log line which was removed from simplesamlphp-module-muni/lib/SessionCheck.php. See MR https://gitlab.ics.muni.cz/perun-proxy-aai/simplesamlphp/simplesamlphp-module-muni/-/merge_requests/56.

lib/Auth/Utils.php

@@ -150,7 +150,9 @@ class Utils
 
         $session->registerLogoutHandler($authority, self::class, 'handleLogout');
         $session->setData('privacyidea:privacyidea', '2FA-success', true, Session::DATA_TIMEOUT_SESSION_END);
+        Logger::info('privacyIDEA: saved 2FA-success');
         Logger::debug('privacyIDEA: SSO data written and logout handler registered.');
+
     }
 
     /**
@@ -331,7 +333,7 @@ class Utils
     public static function getClientIP()
     {
         $result = ($_SERVER['HTTP_X_FORWARDED_FOR'] ?? null) ?: ($_SERVER['REMOTE_ADDR'] ?? null)
-        ?: ($_SERVER['HTTP_CLIENT_IP'] ?? null);
+            ?: ($_SERVER['HTTP_CLIENT_IP'] ?? null);
         Logger::debug('privacyIDEA: client ip: ' . $result);
 
         return $result;