Use head elements and new manganis syntax in examples (#2688)

* use head elements and new manganis syntax in examples
* only enable desktop workspace example scraping during a dioxus release

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

examples/reducer.rs

@@ -7,7 +7,7 @@
 
 use dioxus::prelude::*;
 
-const STYLE: &str = asset!(file("./examples/assets/radio.css"));
+const STYLE: &str = asset!("./examples/assets/radio.css");
 
 fn main() {
     launch(app);
@@ -17,7 +17,7 @@ fn app() -> Element {
     let mut state = use_signal(|| PlayerState { is_playing: false });
 
     rsx!(
-        link { rel: "stylesheet", href: STYLE }
+        head::Link { rel: "stylesheet", href: STYLE }
         h1 {"Select an option"}
 
         // Add some cute animations if the radio is playing!