[Catalog] enable expressive SearchView in AppBarWithSearch demos

PiperOrigin-RevId: 880971433

Author: Material Design Team

catalog/java/io/material/catalog/search/res/layout/cat_search_appbar_icons_fragment.xml

@@ -24,6 +24,7 @@
     android:id="@+id/app_bar_layout"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:theme="@style/ThemeOverlay.Material3Expressive.AppBarWithSearch"
     android:fitsSystemWindows="true">
 
     <androidx.constraintlayout.widget.ConstraintLayout
@@ -113,6 +114,7 @@
 
   <com.google.android.material.search.SearchView
     android:id="@+id/cat_search_view"
+    style="@style/Widget.Material3Expressive.SearchView.AppBarWithSearch"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:hint="@string/cat_searchbar_short_hint"