linux watcher (#12615)

fixes https://github.com/zed-industries/zed/issues/12297
fixes https://github.com/zed-industries/zed/issues/11345

Release Notes:

- N/A

---------

Co-authored-by: Max <max@zed.dev>

crates/settings/src/settings_file.rs

@@ -38,7 +38,7 @@ pub fn watch_config_file(
     let (tx, rx) = mpsc::unbounded();
     executor
         .spawn(async move {
-            let events = fs.watch(&path, Duration::from_millis(100)).await;
+            let (events, _) = fs.watch(&path, Duration::from_millis(100)).await;
             futures::pin_mut!(events);
 
             let contents = fs.load(&path).await.unwrap_or_default();