Simplify WorkerPool bootstrap setup

The WorkerPool bootstrap has been simplified by removing conditional file_exists check and directly setting the 'vendor/autoload.php' as the bootstrap. This will make the script setup less convoluted and easier to understand.

csv-blueprint.php

@@ -20,17 +20,12 @@
 
 \define('PATH_ROOT', __DIR__);
 require_once PATH_ROOT . '/vendor/autoload.php';
+WorkerPool::setBootstrap(PATH_ROOT . '/vendor/autoload.php');
 
 if ('cli' !== \PHP_SAPI) {
     throw new Exception('This script must be run from the command line.');
 }
 
-WorkerPool::setBootstrap(
-    \file_exists(PATH_ROOT . '/docker/preload.php')
-        ? PATH_ROOT . '/docker/preload.php'
-        : PATH_ROOT . '/vendor/autoload.php',
-);
-
 // Fix for GitHub actions. See action.yml
 $_SERVER['argv'] = Utils::fixArgv($_SERVER['argv'] ?? []);
 $_SERVER['argc'] = \count($_SERVER['argv']);