12.0.0 react-dev-utils/openBrowser.js/startBrowserProces bug => BROWSER env value ignored

Describe the bug

react-dev-utils@12.0.0 function startBrowserProcess is calling npm package open function open with wrongly shaped parameter.

Detected on LinuxOS.

Call from react-dev-utils/openBrowser.js/startBrowserProcess to open/open(url,options) is using wrong form for the options parameter. As a result, when using environment variable BROWSER, that value gets ignored and the default browser is opened instead.

react-dev-utils/openBrowser.js/startBrowserProcess

    var options = { app: browser, wait: false, url: true };
    open(url, options).catch(() => {}); // Prevent `unhandledRejection` error.
    return true;

The value of browser is the BROWSER env value, but the property app should be an object

{name: browser}

instead. Here are the usage examples provided by the open npm package page:

// Opens the URL in a specified browser.
await open('https://sindresorhus.com', {app: {name: 'firefox'}});

// Specify app arguments.
await open('https://sindresorhus.com', {app: {name: 'google chrome', arguments: ['--incognito']}});