FIX ModelAdmin toast elements

Author: Sabina Talipova

code/LeftAndMain.php

@@ -867,6 +867,9 @@ public function redirect($url, $code = 302)
             if ($this->getRequest()->getHeader('X-Pjax') && !$response->getHeader('X-Pjax')) {
                 $response->addHeader('X-Pjax', $this->getRequest()->getHeader('X-Pjax'));
             }
+            if ($this->getRequest()->getHeader('X-Status') && !$response->getHeader('X-Status')) {
+                $response->addHeader('X-Status', $this->getRequest()->getHeader('X-Status'));
+            }
             $newResponse = new LeftAndMain_HTTPResponse(
                 $response->getBody(),
                 $response->getStatusCode(),