“dev: open highlights tree view” is useful for inspecting semantic tokens. To create a theme, custom-defined semantic rules and theme settings are required and theme mappings can be difficult across languages. This PR adds syntax(tree-sitter) tokens and their resolved theme keys to tree view. It also updates semantic token entries to show their resolved theme keys. Before: <img width="818" height="634" alt="before" src="https://github.com/user-attachments/assets/d553fe1f-5216-4793-ab98-7d5a2011d122" /> After: <img width="888" height="677" alt="after" src="https://github.com/user-attachments/assets/69dbab6b-d99d-4ff3-bc72-9c4587586e39" /> 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: - Added support for listing tree-sitter tokens in highlights tree view, including their resolved theme keys. Semantic token entries also show their resolved theme keys. --------- Co-authored-by: ozacod <ozacod@users.noreply.github.com>