feat: add prevent default attribute and upgrade router

examples/hello_world.rs

@@ -1,7 +1,8 @@
 use dioxus::prelude::*;
+use dioxus_desktop::tao::menu::MenuBar;
 
 fn main() {
-    dioxus::desktop::launch(app);
+    dioxus::desktop::launch_cfg(app, |c| c.with_window(|w| w.with_menu(MenuBar::default())));
 }
 
 fn app(cx: Scope) -> Element {