Refactor Candidate and Quiz entities, rename Correction to QuizCandidate, and update related workflows

This commit removes nullable Uuid properties for consistency, transitions the Correction entity to QuizCandidate with associated migrations, refactors queries and repositories, adjusts related routes and controllers to use the new entity, updates front-end assets for elimination workflows, and standardizes route requirements and naming conventions.

src/Controller/Admin/CorrectionCrudController.php

@@ -4,13 +4,13 @@ declare(strict_types=1);
 
 namespace App\Controller\Admin;
 
-use App\Entity\Correction;
+use App\Entity\QuizCandidate;
 use EasyCorp\Bundle\EasyAdminBundle\Controller\AbstractCrudController;
 
 class CorrectionCrudController extends AbstractCrudController
 {
     public static function getEntityFqcn(): string
     {
-        return Correction::class;
+        return QuizCandidate::class;
     }
 }