Add headers (laravel#46780)

* add headers

* Update Application.php

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Foundation/Application.php

@@ -1218,7 +1218,7 @@ public function isDownForMaintenance()
     public function abort($code, $message = '', array $headers = [])
     {
         if ($code == 404) {
-            throw new NotFoundHttpException($message);
+            throw new NotFoundHttpException($message, null, 0, $headers);
         }
 
         throw new HttpException($code, $message, null, $headers);