partially restore spreading attributes

packages/core/tests/miri_full_app.rs

@@ -38,7 +38,7 @@ fn app() -> Element {
             }
             button { onclick: move |_| idx -= 1, "-" }
             ul {
-                {(0..**idx).map(|i| rsx! {
+                {(0..*idx()).map(|i| rsx! {
                     ChildExample { i: i, onhover: onhover }
                 })}
             }