Add "shift-r" and "g ." support for helix mode (#35468)

Related #4642
Compatible with #34136

Release Notes:

- Helix: `Shift+R` works as Paste instead of taking you to ReplaceMode
- Helix: `g .` goes to last modification place (similar to `. in vim)
bb5cfe118fRomans Malinovskis committed on 8/26/2025, 3:37:29 AM· committed by GitHubparent633ce23
2 files changedLine totals unavailable