fix: empty values on desktop

packages/html/src/events.rs

@@ -486,6 +486,8 @@ pub mod on {
     #[derive(Debug)]
     pub struct FormData {
         pub value: String,
+
+        #[serde(default)]
         pub values: HashMap<String, String>,
         /* DOMEvent:  Send + SyncTarget relatedTarget */
     }