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/languages/src/go.rs

@@ -5,7 +5,7 @@ use futures::StreamExt;
 use gpui::{AppContext, AsyncAppContext, Task};
 use http_client::github::latest_github_release;
 pub use language::*;
-use lsp::LanguageServerBinary;
+use lsp::{LanguageServerBinary, LanguageServerName};
 use regex::Regex;
 use serde_json::json;
 use smol::{fs, process};