Respect workspace order in recent projects (#12844)

<img width="1266" alt="Screenshot 2024-06-10 at 14 33 32"
src="https://github.com/zed-industries/zed/assets/1347854/c75de033-f2c8-4500-8b34-46b5f0260d3d">

This changes the recent projects panel to use the order of paths from
the workspace rather than always being alphanumerical.

This follows the work to introduce manual workspace ordering to ensure
the recent projects paths reflect the order of paths in the main project
panel.

Release Notes:

- Improve the recent project panel by ordering paths using the workspace
order

crates/workspace/src/persistence/model.rs

@@ -39,8 +39,8 @@ impl LocalPaths {
         Self(Arc::new(paths))
     }
 
-    pub fn paths(&self) -> Arc<Vec<PathBuf>> {
-        self.0.clone()
+    pub fn paths(&self) -> &Arc<Vec<PathBuf>> {
+        &self.0
     }
 }