Fix TwigBroadcaster $idAccessor argument is nullable

Author: smnandre

src/Turbo/src/Broadcaster/TwigBroadcaster.php

@@ -21,15 +21,18 @@
  */
 final class TwigBroadcaster implements BroadcasterInterface
 {
+    private IdAccessor $idAccessor;
+
     /**
      * @param array<string, string> $templatePrefixes
      */
     public function __construct(
         private BroadcasterInterface $broadcaster,
         private Environment $twig,
         private array $templatePrefixes = [],
-        private IdAccessor $idAccessor = new IdAccessor(),
+        ?IdAccessor $idAccessor = null,
     ) {
+        $this->idAccessor = $idAccessor ?? new IdAccessor();
     }
 
     public function broadcast(object $entity, string $action, array $options): void