helix: Allow yank without a selection (#35612)

Related https://github.com/zed-industries/zed/issues/4642

Release Notes:
- Helix: without active selection, pressing `y` in helix mode will yank
a single character under cursor.

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Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
20be133713Romans Malinovskis committed on 8/14/2025, 5:04:01 PM· committed by GitHubparent528d56e
3 files changedLine totals unavailable