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

packages/desktop/src/launch.rs

@@ -52,7 +52,7 @@ pub fn launch_virtual_dom_blocking(virtual_dom: VirtualDom, desktop_config: Conf
                 UserWindowEvent::Ipc { id, msg } => match msg.method() {
                     IpcMethod::Initialize => app.handle_initialize_msg(id),
                     IpcMethod::FileDialog => app.handle_file_dialog_msg(msg, id),
-                    IpcMethod::UserEvent => app.handle_user_event_msg(msg, id),
+                    IpcMethod::UserEvent => {}
                     IpcMethod::Query => app.handle_query_msg(msg, id),
                     IpcMethod::BrowserOpen => app.handle_browser_open(msg),
                     IpcMethod::Other(_) => {}