Consider moving or loading search script dynamically

[rmenner]

suggestion (performance): Consider moving or loading search script dynamically

The inline script for Google Custom Search might impact initial page load performance. Consider moving it to the bottom of the body or loading it dynamically after the initial page load.

<div role="search">
  <div class="gcse-search"></div>
</div>
<script>
  window.addEventListener('load', function() {
    var script = document.createElement('script');
    script.src = 'https://cse.google.com/cse.js?cx=b792c366f1ce73e3d';
    document.body.appendChild(script);
  });
</script>

_Originally posted by @sourcery-ai[bot] in https://github.com/AlaskaAirlines/AuroDocsSite/pull/249#discussion_r1803878146_