Fix new lines on preload script (#7441)

* Fix new lines on preload script

* re-run

Author: samsonasik

ecs.php

@@ -26,6 +26,7 @@
 
         // avoid re-running on build
         __DIR__ . '/preload.php',
+        __DIR__ . '/preload-split-package.php',
 
         PhpdocTypesFixer::class => [
             // double to Double false positive