TUI: question dialog keyboard trapped after switching tabs while custom-answer field is focused

Description

When a question dialog has multiple questions (tabs) and I'm typing a custom
"Type your own answer" reply, mouse-clicking another tab leaves the dialog stuck
in edit mode. Clicking the "Confirm" tab traps the keyboard completely: no
keypress does anything, including Esc. Only recovery is clicking a question tab
and pressing Esc to exit edit mode.

Cause: selectTab() in packages/tui/src/cli/cmd/tui/routes/session/question.tsx
changes the tab without resetting store.editing, which disables both keymap
blocks (editing keymap requires !confirm(), navigation keymap requires
!editing). The CLI footer handles this correctly via questionSetTab() setting
editing: false. Present on v1.18.29 and current dev.

Plugins

No response

OpenCode version

1.18.29

Steps to reproduce

1. Ask a question that produces multiple questions (tab bar with Confirm tab)
2. Click "Type your own answer", type something
3. Mouse-click the "Confirm" tab
4. Press any key — nothing responds, Esc included

Screenshot and/or share link

No response

Operating System

Fedora 44 (Linux x86-64)

Terminal

Ghostty