edit_prediction: Disable jumps for staff (#61960)

# Objective

- Stop enabling edit prediction jumps by default for Zed staff.

## Solution

- Disable the staff default for the `edit_prediction_jumps` feature
flag.

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

---

Release Notes:

- N/A
ae394f3d47Ben Kunkle committed on 7/30/2026, 11:37:00 PM· committed by GitHubparentb6b2148
1 file changedLine totals unavailable