D11: add supported normalizer

modules/jsonrpc_discovery/src/Normalizer/AnnotationNormalizer.php

@@ -27,12 +27,25 @@ class AnnotationNormalizer extends NormalizerBase {
    * The supported interfaces and classes.
    *
    * @var array
+   *
+   * @todo Remove when support for D10.0 is dropped.
+   * https://www.drupal.org/node/3359695
    */
   protected array $supportedInterfaceOrClass = [
     JsonRpcMethod::class,
     JsonRpcParameterDefinition::class,
   ];
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getSupportedTypes(?string $format): array {
+    return [
+      JsonRpcMethod::class => TRUE,
+      JsonRpcParameterDefinition::class => TRUE,
+    ];
+  }
+
   /**
    * {@inheritdoc}
    */