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/prettier_store.rs

@@ -15,9 +15,9 @@ use futures::{
 use gpui::{AsyncAppContext, EventEmitter, Model, ModelContext, Task, WeakModel};
 use language::{
     language_settings::{Formatter, LanguageSettings, SelectedFormatter},
-    Buffer, LanguageRegistry, LanguageServerName, LocalFile,
+    Buffer, LanguageRegistry, LocalFile,
 };
-use lsp::{LanguageServer, LanguageServerId};
+use lsp::{LanguageServer, LanguageServerId, LanguageServerName};
 use node_runtime::NodeRuntime;
 use paths::default_prettier_dir;
 use prettier::Prettier;