title: How to change selected BottomNavigationView icon size
body: <p>I am using native BottomNavigationView and I want to change selected icon size bigger than unselected icon sizes. (exp. selected icon 40dp, other icon sizes 20dp).</p>
  
  <pre><code>    &lt;com.google.android.material.bottomnavigation.BottomNavigationView
          android:id="@+id/bottom_navigation"
          android:layout_width="match_parent"
          android:layout_height="50dp"
          android:layout_alignParentBottom="true"
          android:layout_centerVertical="true"
          android:scaleType="center"
          style="@style/Widget.Design.BottomNavigationView"
          app:labelVisibilityMode="unlabeled"
          app:menu="@menu/navigation_menu" /&gt;
  </code></pre>
  
  <p></p>
  
  <pre><code>&lt;item
      android:id="@+id/homePageFragment"
      android:icon="@drawable/selector_nav_home"
      android:orderInCategory="1"
      android:title="" /&gt;
  
  &lt;item
      android:id="@+id/discoverPageFragment"
      android:icon="@drawable/selector_nav_discover"
      android:orderInCategory="2"
      android:title="" /&gt;
  
  &lt;item
      android:id="@+id/qrPageFragment"
      android:icon="@drawable/selector_nav_qr"
      android:orderInCategory="3"
      android:title="" /&gt;
  
  &lt;item
      android:id="@+id/myAccountFragment"
      android:icon="@drawable/selector_nav_profile"
      android:orderInCategory="4"
      android:title="" /&gt;
  </code></pre>
  
  <p></p>
  
  <p></p>
  
  <pre><code>&lt;item android:drawable="@drawable/ic_bottom_navigation_profile" android:state_checked="true"/&gt;
  
  &lt;item android:drawable="@drawable/ic_navigation_profile" android:state_checked="false"/&gt;
  </code></pre>
  
  <p></p>