Fixed a confusing result when you tap Try again on a message the assistant failed to finish.
- Retrying now removes the entire unfinished attempt, not just the error notice.
- A half-written answer, such as a partial course suggestion, no longer stays on screen alongside the new one, so you can't end up comparing two versions with different details.
- Earlier messages that were already saved to your conversation stay in place, so the conversation still looks the same after you reload the page.
