FIX ModelAdmin toast elements

Author: Sabina Talipova

code/LeftAndMain.php

@@ -830,7 +830,6 @@ public function handleRequest(HTTPRequest $request)
             $e->setResponse($errorResponse);
             throw $e;
         }
-
         $title = $this->Title();
         if (!$response->getHeader('X-Controller')) {
             $response->addHeader('X-Controller', static::class);
@@ -867,6 +866,9 @@ public function redirect($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(),