chore: clean up examples and fix link opening code

examples/filedragdrop.rs

@@ -4,7 +4,7 @@ fn main() {
     dioxus::desktop::launch_with_props(app, (), |c| {
         c.with_file_drop_handler(|_w, e| {
             println!("{:?}", e);
-            false
+            true
         })
     });
 }