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/python.rs

@@ -8,8 +8,9 @@ use language::LanguageToolchainStore;
 use language::Toolchain;
 use language::ToolchainList;
 use language::ToolchainLister;
-use language::{ContextProvider, LanguageServerName, LspAdapter, LspAdapterDelegate};
+use language::{ContextProvider, LspAdapter, LspAdapterDelegate};
 use lsp::LanguageServerBinary;
+use lsp::LanguageServerName;
 use node_runtime::NodeRuntime;
 use pet_core::os_environment::Environment;
 use pet_core::python_environment::PythonEnvironmentKind;