fix(common): expose request url in network error (#27143)

closes #27029

PR Close #27143

packages/common/http/src/xhr.ts

@@ -232,10 +232,12 @@ export class HttpXhrBackend implements HttpBackend {
       // Connection timeout, DNS error, offline, etc. These are actual errors, and are
       // transmitted on the error channel.
       const onError = (error: ErrorEvent) => {
+        const {url} = partialFromXhr();
         const res = new HttpErrorResponse({
           error,
           status: xhr.status || 0,
           statusText: xhr.statusText || 'Unknown Error',
+          url: url || undefined,
         });
         observer.error(res);
       };