[Catalog] Replace android.support dependencies with androidx

Resolves #2898

PiperOrigin-RevId: 466061753

Author: drchen

catalog/java/io/material/catalog/tableofcontents/TocFragment.java

@@ -25,8 +25,8 @@
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
-import android.support.v7.widget.SearchView;
-import android.support.v7.widget.SearchView.OnQueryTextListener;
+import androidx.appcompat.widget.SearchView;
+import androidx.appcompat.widget.SearchView.OnQueryTextListener;
 import androidx.appcompat.widget.Toolbar;
 import android.util.DisplayMetrics;
 import android.view.LayoutInflater;

catalog/java/io/material/catalog/tableofcontents/res/layout/cat_toc_header.xml

@@ -19,7 +19,7 @@
   android:layout_width="match_parent"
   android:layout_height="wrap_content">
 
-  <android.support.v7.widget.SearchView
+  <androidx.appcompat.widget.SearchView
     android:id="@+id/cat_toc_search_view"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"