language servers: Fix wrong language server name (#20428)

This fixes the issue of multiple language servers showing up as `node`
in the language server logs dropdown.

It does this by changing `language_server.name()` to return the
adapter's name, not the binary name, and changing types to make sure
that we always use this.

Release Notes:

- Fixed language server names showing up only as `"node"`

---------

Co-authored-by: Sam Rose <hello@samwho.dev>
Co-authored-by: Bennet <bennet@zed.dev>

crates/project/src/project_settings.rs

@@ -2,7 +2,7 @@ use anyhow::Context;
 use collections::HashMap;
 use fs::Fs;
 use gpui::{AppContext, AsyncAppContext, BorrowAppContext, EventEmitter, Model, ModelContext};
-use language::LanguageServerName;
+use lsp::LanguageServerName;
 use paths::{
     local_settings_file_relative_path, local_tasks_file_relative_path,
     local_vscode_tasks_file_relative_path, EDITORCONFIG_NAME,