pylsp: Prefer version from user venv (#21069)

Closes #ISSUE

Release Notes:

- pylsp will now use version installed in user venv, if one is
available.

crates/languages/src/rust.rs

@@ -76,6 +76,7 @@ impl LspAdapter for RustLspAdapter {
     async fn check_if_user_installed(
         &self,
         delegate: &dyn LspAdapterDelegate,
+        _: Arc<dyn LanguageToolchainStore>,
         _: &AsyncAppContext,
     ) -> Option<LanguageServerBinary> {
         let path = delegate.which("rust-analyzer".as_ref()).await?;