showkey in Ghostty, iTerm2, and Terminal.app reports ctrl-delete as
`<ESC>[3;5~`.

I tested this keybind on macOS, where fish_key_reader correctly
interprets it as ctrl-delete.

Closes #51725

Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [ ] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Fixed ctrl-delete keybind in the terminal

---------

Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>