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/all_events.rs

@@ -6,7 +6,7 @@
 use dioxus::prelude::*;
 use std::{collections::VecDeque, fmt::Debug, rc::Rc};
 
-const STYLE: &str = asset!(file("./examples/assets/events.css"));
+const STYLE: &str = asset!("./examples/assets/events.css");
 
 fn main() {
     launch(app);
@@ -26,7 +26,7 @@ fn app() -> Element {
     };
 
     rsx! {
-        link { rel: "stylesheet", href: STYLE }
+        head::Link { rel: "stylesheet", href: STYLE }
         div { id: "container",
             // focusing is necessary to catch keyboard events
             div { id: "receiver", tabindex: 0,