More fullstack fixes (#4737)

* allow `--server` only builds!

* rollback example

* capture `/:route` routes

* fix: properly implement file uploads in forms

* implement desktop form uploads

* Performant serialization of form bytes

* finish up file stuff

* cleanups

* add request headers to streaming context

* remove some unwraps

packages/desktop/src/launch.rs

@@ -91,7 +91,6 @@ pub fn launch_virtual_dom_blocking(virtual_dom: VirtualDom, mut desktop_config:
 
                 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 => {}
                     IpcMethod::Query => app.handle_query_msg(msg, id),
                     IpcMethod::BrowserOpen => app.handle_browser_open(msg),