copilot: Add support for Next Edit Suggestion (#44486)
This PR introduces support for Next Edit Suggestions while doing away
with calling legacy endpoints. In the process we've also removed support
for cycling completions, as NES will give us a single prediction, for
the most part.
Closes #30124
Release Notes:
- Zed now supports Copilot's [Next Edit
Suggestions](https://code.visualstudio.com/blogs/2025/02/12/next-edit-suggestions).
9ad059d3bePiotr Osiewicz committed on 12/17/2025, 8:43:42 PM· committed by GitHubparent0d0a082