front > login : fix redirection when user is already logged in

public/site/controllers/site.php

@@ -1,6 +1,10 @@
 <?php
 
 return function ($page, $kirby, $site) {
+  if (!$kirby->user() && $page->uri() !== 'login') {
+    go('/login');
+  }
+
   $data = $page->toArray();
   $data['template'] = (string) $page->template();
   $data['newInspirations'] = (bool) page('inspirations')->children()->findBy('new', 'true');