如何允许在Bootstrap Select中输入空格？

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-select@1.14.0/dist/css/bootstrap-select.min.css">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap-select@1.14.0/dist/js/bootstrap-select.min.js"></script>

<select class="selectpicker" data-live-search="true">
  <option>Option 1</option>
  <option>Option 2</option>
  <option>Option 3</option>
</select>

$(document).ready(function() {
  $('.selectpicker').selectpicker();
});