[Catalog] Updated button type to fill for FloatingToolBar demo to comply with NTC

PiperOrigin-RevId: 698587340

Author: imhappi

catalog/java/io/material/catalog/floatingtoolbar/res/layout/cat_floating_toolbar_content.xml

@@ -17,23 +17,23 @@
   xmlns:app="http://schemas.android.com/apk/res-auto">
   <Button
     android:id="@+id/floating_toolbar_button_bold"
-    style="?attr/materialIconButtonStyle"
+    style="?attr/materialIconButtonFilledStyle"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:checkable="true"
     android:contentDescription="@string/cat_floating_toolbar_button_bold_content_description"
     app:icon="@drawable/ic_format_bold_24px" />
   <Button
     android:id="@+id/floating_toolbar_button_italic"
-    style="?attr/materialIconButtonStyle"
+    style="?attr/materialIconButtonFilledStyle"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:checkable="true"
     android:contentDescription="@string/cat_floating_toolbar_button_italic_content_description"
     app:icon="@drawable/ic_format_italic_24px" />
   <Button
     android:id="@+id/floating_toolbar_button_underlined"
-    style="?attr/materialIconButtonStyle"
+    style="?attr/materialIconButtonFilledStyle"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:checkable="true"