JSFiddle - React, Tailwind, and code Playground

JavaScript

$('body *').mouseover(function(){
    if($(".player-controls-wrapper")[0]){
        $('#netflix-player').append('<span id="simulateCtrlShiftAltT" class="no-select"></span>');
        $('body *').unbind('mouseover');
    }
});

// Prepare function for injection into page
function injected() {
  // Adjust as needed; some events are only processed at certain elements
  var element = document.body;

  function keyEvent(el, ev) {
    var eventObj = document.createEvent("Events");
    eventObj.initEvent(ev, true, true);

    // Edit this to fit
    eventObj.keyCode = 83;
    eventObj.which = 83;
    eventObj.ctrlKey = true;
    eventObj.shiftKey = true;
    eventObj.altKey = true;

    el.dispatchEvent(eventObj);
  }

  // Trigger all 3 just in case
  keyEvent(element, "keydown");
  keyEvent(element, "keypress");
  keyEvent(element, "keyup");
}

// Inject the script
function execute(){
    var script = document.createElement('script');
    script.textContent = "(" + injected.toString() + ")();";
    (document.head||document.documentElement).appendChild(script);
    script.parentNode.removeChild(script);
}

$('body').on('click', '#simulateCtrlShiftAltT', execute);

$('body').keypress(function(e) {
    if (document.webkitIsFullScreen){document.webkitCancelFullScreen();}
    if(e.shiftKey && e.altKey && e.ctrlKey && e.keyCode == 83){
        console.log('DONE!');
    }
});