debugger: Run locators on LSP tasks for the new process modal (#32097)

- [x] pass LSP tasks into list_debug_scenarios
- [x] load LSP tasks only once for both modals
- [x] align ordering
- [x] improve appearance of LSP debug task icons
- [ ] reconsider how `add_current_language_tasks` works
- [ ] add a test

Release Notes:

- Debugger Beta: Added debuggable LSP tasks to the "Debug" tab of the
new process modal.

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Co-authored-by: Anthony Eid <hello@anthonyeid.me>

crates/debugger_ui/Cargo.toml

@@ -39,6 +39,7 @@ file_icons.workspace = true
 futures.workspace = true
 fuzzy.workspace = true
 gpui.workspace = true
+itertools.workspace = true
 language.workspace = true
 log.workspace = true
 menu.workspace = true