Learnpath: Fix final certificate generation and enforce last position - refs BT#22813

Author: christianbeeznest

public/main/gradebook/lib/be/category.class.php

@@ -2012,7 +2012,6 @@ public static function generateUserCertificate(
         bool $sendNotification = false,
         bool $skipGenerationIfExists = false
     ) {
-        $user_id = (int) $user_id;
         $categoryId = $category->getId();
         $sessionId = $category->getSession() ? $category->getSession()->getId() : 0;
         $courseId = $category->getCourse()->getId();