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/gpui/src/platform/linux/platform.rs

@@ -441,7 +441,7 @@ impl<P: LinuxClient + 'static> Platform for P {
     fn app_path(&self) -> Result<PathBuf> {
         // get the path of the executable of the current process
         let app_path = env::current_exe()?;
-        return Ok(app_path);
+        Ok(app_path)
     }
 
     fn set_menus(&self, menus: Vec<Menu>, _keymap: &Keymap) {