lsp: Register available LSP adapters locally when in remote development (#54915)

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 #49178

The context for this change is covered in #49178. Some language server
adapters are lazily registered; in remote development or collab
sessions, the local client fails to register these adapters, may causing
certain LSP features to function incorrectly. This PR is intended to
address that.

Release Notes:

- N/A
9cc78ac691Xin Zhao committed on 6/1/2026, 6:32:55 AM· committed by GitHubparent747c41f
9 files changedLine totals unavailable