Add a comment about the use of `shell_kind` in terminal.rs (#40114)

Release Notes:

- N/A

Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
9edf1f8f04Cole Miller committed on 10/13/2025, 3:36:40 PM· committed by GitHubparent23fe74e
1 file changedLine totals unavailable