winit: Fix replacement of node in wasm

Replacing a node ends up with the following error:
Node.replaceChild: Child to be replaced is not a child of this node

It seems that Node.replaceChild is not recommended, and instead
Element.replaceWith should be preferred. Using it avoids the panic.

winit/src/application.rs

@@ -179,13 +179,17 @@ where
                 .unwrap_or(None)
         });
 
-        let _ = match target {
+        match target {
-            Some(node) => node
+            Some(node) => {
-                .replace_child(&canvas, &node)
+                let _ = node
-                .expect(&format!("Could not replace #{}", node.id())),
+                    .replace_with_with_node_1(&canvas)
-            None => body
+                    .expect(&format!("Could not replace #{}", node.id()));
-                .append_child(&canvas)
+            }
-                .expect("Append canvas to HTML body"),
+            None => {
+                let _ = body
+                    .append_child(&canvas)
+                    .expect("Append canvas to HTML body");
+            }
         };
     }