[Bug]: Electron 19 don't load page on Windows 7

[PurpleHorrorRus]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

Electron Version

19.0.1

What operating system are you using?

Windows

Operating System Version

Windows 7

What arch are you using?

x64

Last Known Working Electron version

18.3.1

Expected Behavior

Electron will load page from local within registered protocol

Actual Behavior

Electron stuck on loading page

Testcase Gist URL

No response

Additional Information

Electron creates app window, creates tray, but can't load page. App registers a protocol for loading a local index file.

import { protocol } from "electron";
import { URL } from "url";
import path from "path";

const PRODUCTION_APP_PROTOCOL = "app";
// eslint-disable-next-line no-undef
const PRODUCTION_APP_PATH = path.join(__dirname, "..", "renderer");

protocol.registerSchemesAsPrivileged([
    { 
        scheme: PRODUCTION_APP_PROTOCOL, 
        privileges: { 
            secure: true, 
            standard: true 
        } 
    }
]);

export default {
    register: () => {
        protocol.registerFileProtocol(PRODUCTION_APP_PROTOCOL, (request, callback) => {
            const pathname = path.normalize(new URL(request.url).pathname);
            const fullPath = path.join(PRODUCTION_APP_PATH, pathname);
            callback({ path: fullPath });
        });
    }
};

And then load it (code below was simplified)

app.once("ready", () => {
    protocol.register();
    window.loadURL("app://./index.html");
});

App don't load page on Windows 7. On Windows 10, Windows 11 and Linux distributions Electron 19 works well.

[PurpleHorrorRus]

It seems error caused by os.gethostname()
Fixed in 20.2.0 (#35705)