Accept GET on /my-csp-report to avoid 500 errors in browser console

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Controller/CspReportController.php

@@ -12,9 +12,13 @@ use Symfony\Component\Routing\Attribute\Route;
 
 class CspReportController extends AbstractController
 {
-    #[Route('/my-csp-report', name: 'app_csp_report', methods: ['POST'])]
+    #[Route('/my-csp-report', name: 'app_csp_report', methods: ['POST', 'GET'])]
     public function report(Request $request, MailerInterface $mailer, LoggerInterface $logger): Response
     {
+        if ($request->isMethod('GET')) {
+            return new Response('', 204);
+        }
+
         $data = $request->getContent();
         $report = empty($data) ? null : json_decode($data, true);