outline_panel: Fix Pin/Unpin tooltip does not update after state changes (#54310)
galuis116
created
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 is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Closes #54309
Release Notes:
- Fixed an outline panel issue where the pin/unpin tooltip could show
stale text after toggling.