Make the Zed2 window movable (#3218)

This PR makes the Zed2 window movable and fixes a crash related to a
`todo!()` that wasn't necessary.

Release Notes:

- N/A

crates/workspace2/src/dock.rs

@@ -622,7 +622,7 @@ impl StatusItemView for PanelButtons {
         _active_pane_item: Option<&dyn crate::ItemHandle>,
         _cx: &mut ViewContext<Self>,
     ) {
-        todo!()
+        // todo!(This is empty in the old `workspace::dock`)
     }
 }
 

crates/workspace2/src/workspace2.rs

@@ -1043,9 +1043,9 @@ impl Workspace {
     //         dock.update(cx, |dock, cx| dock.add_panel(panel, cx));
     //     }
 
-    //     pub fn status_bar(&self) -> &View<StatusBar> {
-    //         &self.status_bar
-    //     }
+    pub fn status_bar(&self) -> &View<StatusBar> {
+        &self.status_bar
+    }
 
     pub fn app_state(&self) -> &Arc<AppState> {
         &self.app_state