Return 500 http error, instead of 200, when dotenv fails to load (#45235)

* Return 500 http error, instead of 200

When dotenv fails, the response on http is always 200.

Because of 200 response, alerts might not be triggered, and data will be cached :(

* Update LoadEnvironmentVariables.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: cosminardeleanu

src/Illuminate/Foundation/Bootstrap/LoadEnvironmentVariables.php

@@ -103,6 +103,8 @@ protected function writeErrorAndDie(InvalidFileException $e)
         $output->writeln('The environment file is invalid!');
         $output->writeln($e->getMessage());
 
+        http_response_code(500);
+
         exit(1);
     }
 }