title: Can't bind to 'shouldLabelFloat' since it isn't a known property of 'input'
body: <p>Based on the <a href="https://material.angular.io/components/input/api#MatInput" rel="nofollow noreferrer">api documentation</a>, <code>shouldLabelFloat</code> is a property of <code>MatInput</code>. But I'm still getting the error. </p>
  
  <pre><code>&lt;mat-form-field&gt;
    &lt;input matInput [shouldLabelFloat]="true" placeholder="First Name"&gt;
  &lt;/mat-form-field&gt;
  </code></pre>