Take &mut self in View::render

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

zed/src/workspace.rs

@@ -944,7 +944,7 @@ impl View for Workspace {
         "Workspace"
     }
 
-    fn render(&self, cx: &mut RenderContext<Self>) -> ElementBox {
+    fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
         let settings = self.settings.borrow();
         Container::new(
             Flex::column()