[BUG] Lost unsent message vol. II

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.41 (Claude Code)
• Operating System: Debian 13
• Terminal: foot

Bug Description

Cancelling @ autocompletion might accidentally delete current message without ability to recover it.

Steps to Reproduce

1. Type <kbd>@</kbd>
2. Observe annoying window split at the bottom
3. Press <kbd>Esc</kbd> in anticipation for it to go away
4. The split will re-appear after a short blink
5. Press <kbd>Esc</kbd> again
6. The whole message disappears

Expected Behavior

Annoying window split at the bottom is gone

Actual Behavior

Unsent message is gone

Additional Context

Ref. https://github.com/anthropics/claude-code/issues/2743