Steps to reproduce

1. Go to a webpage which has DOM mutations
2. Import and start the virtual screen reader

   const { virtual } = await import('https://unpkg.com/@guidepup/virtual-screen-reader/lib/esm/index.browser.js');
   await virtual.start({ container: document.body });
   

3. Do some things to trigger DOM mutations
4. Notice that elements begin to have many identical focus event listeners