fix(app-vite): Correctly use WHATWG URL constructor

Here is a lengthy discussion about the problem nodejs/node#12682

app-vite/lib/modes/ssr/ssr-devserver.js

@@ -307,7 +307,7 @@ class SsrDevServer extends AppDevserver {
     const { publicPath } = this.#appOptions
 
     publicPath !== '/' && app.use((req, res, next) => {
-      const pathname = new URL(req.url).pathname || '/'
+      const pathname = new URL(req.url, `http://${request.headers.host}`).pathname || '/'
 
       if (pathname.startsWith(publicPath) === true) {
         next()