Use default height for extended FAB (closes #3949)

app/src/main/res/layout/main_activity.xml

@@ -73,7 +73,10 @@
     <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
         android:id="@+id/root_fab"
         style="@style/Theme.Widget.FAB"
-        android:visibility="gone" />
+        android:visibility="gone"
+        tools:icon="@drawable/ic_add_24dp"
+        tools:text="Action"
+        tools:visibility="visible" />
 
     <com.google.android.material.bottomnavigation.BottomNavigationView
         android:id="@+id/bottom_nav"

app/src/main/res/values/styles.xml

@@ -129,7 +129,6 @@
         <item name="android:layout_height">wrap_content</item>
         <item name="android:layout_width">wrap_content</item>
         <item name="fabCustomSize">@dimen/fab_size</item>
-        <item name="android:minHeight">@dimen/fab_size</item>
         <item name="android:minWidth">@dimen/fab_size</item>
         <item name="android:layout_gravity">bottom|end</item>
         <item name="android:layout_margin">@dimen/fab_margin</item>