lsp: Display readable gopls version in UI (#49835)

Closes #49757
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Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Fixed gopls version display showing raw JSON instead of readable
version number
08951258e5ᴀᴍᴛᴏᴀᴇʀ committed on 3/17/2026, 7:36:37 AM· committed by GitHubparentcd1211f
4 files changedLine totals unavailable