## Summary

- Fixed the terminal inline assist tab bar tooltip so it resolves the
keybinding from the active terminal view.
- The bug happened when the initial terminal was closed and a new
terminal was opened: the tab bar button kept a cached focus handle for
the old terminal, so tooltip keybinding lookup could no longer find the
terminal key context.
- The button is now created while rendering the tab bar with the current
terminal view's focus handle, avoiding stale focus handles as terminals
are closed and recreated.

## Validation

- `cargo fmt --package terminal_view --check`
- `cargo check -p terminal_view --message-format short`

Release Notes:

- Fixed the terminal inline assist toolbar tooltip not showing its
keybinding after reopening terminals.

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Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>