feat(client): replyToThreadId field for Message

packages/client/src/types/messages/message.ts

@@ -348,6 +348,14 @@ export class Message {
         return this.raw.replyTo?.replyToMsgId ?? null
     }
 
+    /**
+     * For replies, ID of the thread (i.e. ID of the top message
+     * in the thread)
+     */
+    get replyToThreadId(): number | null {
+        return this.raw.replyTo?.replyToTopId ?? null
+    }
+
     /**
      * Whether this message contains mention of the current user
      */