Pressing up arrow while selecting text submits a previous prompt

While using the plugin selection UI, pressing the up arrow key caused a previous prompt to be submitted instead of navigating within the current context. The prior prompt was sent as a new message without the user intending to submit it.

Steps to reproduce

1. Open a context where a selection UI is active (e.g. plugin picker)
2. Press the up arrow key to navigate
3. A previous prompt from history is submitted as a new message

Expected behavior

Up arrow navigates within the UI without affecting prompt history or submission.

Actual behavior

Previous prompt from history is submitted as a new message.

Environment

• OS: macOS 24.6.0
• Shell: zsh