Closes#29544
Fixes an issue where accepting an HTML completion would correctly edit
the start tag but incorrectly update the end tag due to incorrect linked
edit ranges.
I want to handle multi cursor case (as it barely works now), but seems
like this should go first. As, it might need whole `do_completions`
overhaul.
Todo:
- [x] Tests for completion aceept on linked edits
Before:
https://github.com/user-attachments/assets/917f8d2a-4a0f-46e8-a004-675fde55fe3d
After:
https://github.com/user-attachments/assets/84b760b6-a5b9-45c4-85d8-b5dccf97775f
Release Notes:
- Fixes an issue where accepting an HTML completion would correctly edit
the start tag but incorrectly update the end tag.