Remove native and web features from dioxus-html (#3006)

* remove native and web features from dioxus-html

* Fix downcasting web events

* Fix desktop with tokio disabled

packages/web/build.rs

@@ -0,0 +1,7 @@
+fn main() {
+    // If any TS files change, re-run the build script
+    lazy_js_bundle::LazyTypeScriptBindings::new()
+        .with_watching("./src/ts")
+        .with_binding("./src/ts/eval.ts", "./src/js/eval.js")
+        .run();
+}