Allows desktop apps to open mailto links (#4282)

* Allows desktop apps to open mailto links

* Drop webbrowser, use `open` only

* switch to that_detached

* use workspace `open`

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

packages/desktop/src/app.rs

@@ -271,7 +271,7 @@ impl App {
         if let Some(temp) = msg.params().as_object() {
             if temp.contains_key("href") {
                 if let Some(href) = temp.get("href").and_then(|v| v.as_str()) {
-                    if let Err(e) = webbrowser::open(href) {
+                    if let Err(e) = open::that_detached(href) {
                         tracing::error!("Open Browser error: {:?}", e);
                     }
                 }