Prefer native node fetch over node-fetch (#1970)

scripts/fetch-package.ts

@@ -5,7 +5,6 @@ import { createWriteStream, promises as fs } from "node:fs";
 import * as childProcess from "node:child_process";
 import * as tar from "tar";
 import * as asar from "@electron/asar";
-import fetch from "node-fetch";
 import { promises as stream } from "node:stream";
 
 import riotDesktopPackageJson from "../package.json";
@@ -125,6 +124,8 @@ async function main(): Promise<number | undefined> {
             });
             fetch(PUB_KEY_URL)
                 .then((resp) => {
+                    if (!resp.ok) throw new Error(`unexpected response ${resp.statusText}`);
+                    if (!resp.body) throw new Error(`unexpected response has no body ${resp.statusText}`);
                     stream.pipeline(resp.body, gpgProc.stdin!).catch(reject);
                 })
                 .catch(reject);