fix #1 TypeError Api::sendUserMessage после отправки сообщения

Added PhotoAttachmentRequestPayloadTest

src/Models/Message.php

@@ -11,8 +11,8 @@ final readonly class Message extends AbstractModel
 {
     /**
      * @param int $timestamp Unix-time when message was created.
-     * @param MessageBody $body Body of created message. Text + attachments.
      * @param Recipient $recipient Message recipient. Could be user or chat.
+     * @param MessageBody|null $body Body of created message. Text + attachments.
      * @param User|null $sender User who sent this message. Can be null if message has been posted on behalf of a channel.
      * @param string|null $url Message public URL. Can be null for dialogs or non-public chats/channels.
      * @param LinkedMessage|null $link Forwarded or replied message.
@@ -20,8 +20,8 @@ final readonly class Message extends AbstractModel
      */
     public function __construct(
         public int $timestamp,
-        public MessageBody $body,
         public Recipient $recipient,
+        public ?MessageBody $body,
         public ?User $sender,
         public ?string $url,
         public ?LinkedMessage $link,