title: How Can I override focusVisible property for a Material UI radio button
body: <p>I am using Material UI - Radio button</p>
  <p>I want to override their focusVisible property where you can apply styles to checkbox on focus <strong>via keyboard only</strong></p>
  <p>I can target the input and use native focus-visible state and apply styles but it is not well supported in older browsers.</p>
  <p>Material UI implemented their own focusVisible state but cannot figure out how to override that. Any suggestions?</p>