title: How to always show the "increment arrows" in a matInput of type number?
body: <p>A picture is worth a 1024 words:</p>
  
  <p><a href="https://i.stack.imgur.com/NxsLD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NxsLD.png" alt="enter image description here"></a></p>
  
  <p>How do I force those arrows to show all the time ? <strong>By default, they only appear on hover</strong>. </p>
  
  <pre><code>&lt;input matInput type="number" placeholder="Value" [(ngModel)]="myValue"&gt;
  </code></pre>
  
  <p>I could not find anything, and I am not even sure how these buttons are called.</p>