Fixes#9450
## What
- When a task is running and the skills autocomplete popup is open,
`Esc` now dismisses the popup instead of sending `Op::Interrupt`.
- `Esc` still interrupts a running task when no popup is active.
## Tests
- `cargo test -p codex-tui`
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Co-authored-by: prateek <199982+prateek@users.noreply.github.com>