Editor end of input context (#40735)

This is needed for #38914 and seems generally useful to have for
contextual keybindings.

Release Notes:

- N/A

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Co-authored-by: David Kleingeld <davidsk@zed.dev>
267052f891Julia Ryan committed on 10/21/2025, 12:08:51 AM· committed by GitHubparent62516e8
2 files changedLine totals unavailable