fix: feature gate tokio and tracing (#4651)

Signed-off-by: Omar Mohamed <mohamed.omar67492@gmail.com>

packages/native/src/assets.rs

@@ -35,10 +35,12 @@ impl NetProvider<Resource> for DioxusNativeNetProvider {
         if request.url.scheme() == "dioxus" {
             match dioxus_asset_resolver::native::serve_asset(request.url.path()) {
                 Ok(res) => {
+                    #[cfg(feature = "tracing")]
                     tracing::trace!("fetching asset  from file system success {request:#?}");
                     handler.bytes(doc_id, res.into_body().into(), self.callback.clone())
                 }
                 Err(_) => {
+                    #[cfg(feature = "tracing")]
                     tracing::warn!("fetching asset  from file system error {request:#?}");
                 }
             }