title: Disable closing of sideNav when click outside the sideNav
body: <p>I am using sideNav of MaterializeCSS in my application. I do not want to close sideNav while clicking outside. It can be achievable in modals like this:</p>
  
  <pre><code>{ dismissible: false }
  </code></pre>
  
  <p>How to do this in sideNav?</p>