title: React testing library: how to getByRole on custom role
body: <p>I have a component <code>&lt;MyComponent1&gt;</code> which</p>
  <pre><code>returns (&lt;MyComponent2&gt; &lt;button aria-pressed=&quot;true&quot;&gt;&lt;/button&gt; &lt;/MyComponent2&gt;)
  </code></pre>
  <p>Now in my unit test for MyComponent1, is there a way i can do screen.getByRole('MyComponent2') ?</p>