Firefox 115ESR 鼠标停留标签自动聚焦失效，求修复

//鼠标停留标签自动聚焦
location.href == 'chrome://browser/content/browser.xhtml' && setTimeout(() => {
  var timeout;
  gBrowser.tabContainer.addEventListener('mouseover', e => {
      if (event.target.closest('tab') && !event.ctrlKey && !event.shiftKey) {
          timeout = setTimeout(() => gBrowser.selectedTab = gBrowser.tabContainer._hoveredTab, 20);
      }
  }, false);
  gBrowser.tabContainer.addEventListener('mouseout', () => clearTimeout(timeout), false);
}, 1000);