Fix a bunch of other low-hanging style lints (#36498)

- **Fix a bunch of low hanging style lints like unnecessary-return**
- **Fix single worktree violation**
- **And the rest**

Release Notes:

- N/A

crates/editor/src/clangd_ext.rs

@@ -13,7 +13,7 @@ use crate::{Editor, SwitchSourceHeader, element::register_action};
 use project::lsp_store::clangd_ext::CLANGD_SERVER_NAME;
 
 fn is_c_language(language: &Language) -> bool {
-    return language.name() == "C++".into() || language.name() == "C".into();
+    language.name() == "C++".into() || language.name() == "C".into()
 }
 
 pub fn switch_source_header(