title: MaterialButton with icon doesn't center text
body: <p>I'm trying to use a Material Button where I want an icon to the very left, and then some text in the center. But when I put in the icon on the left for instance, I can clearly see the text being pushed to the right. Is there any way to avoid this? I want the text to be centered, and would like to avoid doing a hacky solution for it..</p>
  
  <pre><code>&lt;com.google.android.material.button.MaterialButton
          android:id="@+id/testButton"
          style="@style/RevertedColorDefaultButton"
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:text="TEST"
          android:textAlignment="center"
          app:icon="@drawable/some_icon"
          app:iconGravity="start"´
          app:iconTint="@color/colorPrimary"
          app:layout_constraintBottom_toTopOf="@id/someOtherButton"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent"
          app:layout_constraintVertical_bias="0.94" /&gt;
  </code></pre>
  
  <p>For info, I tried the same thing with a regular button, same issue:</p>
  
  <pre><code>&lt;androidx.appcompat.widget.AppCompatButton
          android:id="@+id/test2Button"
          style="@style/RevertedColorDefaultButton"
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:drawableStart="@drawable/some_icon"
          android:drawableTint="@color/colorPrimary"
          android:text="TEST"
          app:layout_constraintBottom_toTopOf="@id/someOtherButton"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent"
          app:layout_constraintVertical_bias="0.94" /&gt;
  </code></pre>
  
  <p>Edit: Image added</p>
  
  <p><a href="https://i.stack.imgur.com/JgIuG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/JgIuG.png" alt="enter image description here"></a></p>