Closes#34111
In Helix mode, the `;` key should collapse the current selection without
moving the cursor. I've added a new action `vim::HelixCollapseSelection`
to support this behavior.
https://github.com/user-attachments/assets/1a40821a-f56f-456e-9d37-532500bef17b
Release Notes:
- Added `;` key binding to collapse the current text selection in Helix
mode