GHSA-qh8j-hqjv-7m4x: Astro: Malformed port in the Host header can crash the Node adapter

In the Astro Node adapter, a request whose Host header contains a malformed port (for example example.com:65536 or example.com:8080:8080) produced an invalid request URL. The fallback intended to recover from an unparseable URL reused the same malformed host, so it failed again and raised an uncaught TypeError: Invalid URL while the request was being built, before any route ran. ## Impact The effect depends on the adapter configuration: - Default configuration (standalone): the request returns 500 Internal Server Error and the server continues running. …