Synchronous prevent default (#2792)

* add prevent default methods to the event

* sync prevent default almost working

* sync prevent default working

* Move event handling into the runtime

* update core tests

* restore desktop file dialog

* implement prevent default on web

* add a hint about the new prevent default method

* fix web prevent default

* Fix CTRL+click on links

* fix values memorize in place test

* Fix a few more tests

* Add a playwright test for sync prevent default

* Fix core doc tests

* create a deprecated VirtualDom::handle_event

* fix macos imports in desktop

* Fix onmounted event

* Fix liveview support

* switch to RefCell for metadata

* Remove println

* remove prevent default attribute

* remove web specific link behavior

* Fix liveview links

* more liveview fixes for link

* Fix merge conflicts

* Fix clippy

* use the new prevent default in the file upload example

examples/link.rs

@@ -70,8 +70,10 @@ fn DefaultLinks() -> Element {
             // It will just log "Hello Dioxus" to the console
             a {
                 href: "http://dioxuslabs.com/",
-                prevent_default: "onclick",
-                onclick: |_| println!("Hello Dioxus"),
+                onclick: |event| {
+                    event.prevent_default();
+                    println!("Hello Dioxus")
+                },
                 "Custom event link - links inside of your app"
             }
         }