Allow spread attributes to be set directly (#3881)

* allow spread attributes to be set directly

* Remove ordering requirement

packages/ssr/tests/forward_spreads.rs

@@ -0,0 +1,55 @@
+use dioxus::prelude::*;
+
+// Regression test for https://github.com/DioxusLabs/dioxus/issues/3844
+#[test]
+fn forward_spreads() {
+    #[derive(Props, Clone, PartialEq)]
+    struct Comp1Props {
+        #[props(extends = GlobalAttributes)]
+        attributes: Vec<Attribute>,
+    }
+
+    #[component]
+    fn Comp1(props: Comp1Props) -> Element {
+        rsx! {
+            Comp2 {
+                attributes: props.attributes.clone(),
+                height: "100%",
+            }
+            Comp2 {
+                height: "100%",
+                attributes: props.attributes.clone(),
+            }
+        }
+    }
+
+    #[derive(Props, Clone, PartialEq)]
+    struct CompProps2 {
+        #[props(extends = GlobalAttributes)]
+        attributes: Vec<Attribute>,
+    }
+
+    #[component]
+    fn Comp2(props: CompProps2) -> Element {
+        let attributes = props.attributes;
+        rsx! {
+            div {
+                ..attributes
+            }
+        }
+    }
+
+    let merged = || {
+        rsx! {
+            Comp1 {
+                width: "100%"
+            }
+        }
+    };
+    let dom = VirtualDom::prebuilt(merged);
+    let html = dioxus_ssr::render(&dom);
+    assert_eq!(
+        html,
+        r#"<div style="width:100%;height:100%;"></div><div style="width:100%;height:100%;"></div>"#
+    );
+}