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Fur Affinity: Fit image to window by default

Clicks on the submission image, triggering the full window + dark background view. Click on the image to return to the default view. Only works in the new UI.

// ==UserScript==
// @name         Fur Affinity:  Fit image to window by default
// @namespace    https://greasyfork.org/en/users/553652-lutris
// @version      1
// @description  Clicks on the submission image, triggering the full window + dark background view.  Click on the image to return to the default view.  Only works in the new UI.
// @author       Lutris
// @match        https://www.furaffinity.net/view/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var clickEvent = new MouseEvent('click', {
        view: window,
        bubbles: true,
        cancelable: true
    });

    document.getElementById("submissionImg").dispatchEvent(clickEvent);

})();