message: fix adding message for topics
diff: @@ -142,7 +142,7 @@ const SendMessage: React.FC = () => {
  key: !key ? null : key,
  content: !content ? null : content,
  headers,
  - partition,
  + partition: !partition ? 0 : partition,
  },
  });
  dispatch(fetchTopicDetails({ clusterName, topicName }));
  