Open Slack in Browser, not App

userscript.js

// ==UserScript==
// @name         Open Slack in Browser, not App
// @match        https://*.slack.com/ssb/redirect
// @match        https://*.slack.com/archives/*
// @run-at       document-end
// @grant        none
// ==/UserScript==

(function() {
  'use strict';
  window.onload = function() {
    const el = document.querySelectorAll("p.p-ssb_redirect__loading_messages > a.c-link").values().filter(x => x.innerText == 'open this link in your browser').next();
    if (el && el.value) {
      el.value.click();
    }
  };
})();