Currently, when users hit the pull request comment limit of 200 comments, the interface remains stuck in a loading state with the message "Sending." This can be confusing and does not provide the user with feedback on what went wrong.

I suggest enhancing the user interface to display a clear error message when the comment limit is reached. Specifically, the error message from the terminal, such as:

{"type":"error","error":{"message":"By default, you can't create more than 200 comments per pull request."}}

should be rendered in the UI. This would help users quickly understand why their comment is not being posted and allow them to take appropriate action.