Removing separate hotseat widget, instead using a QSB acroll all UI.
The QSB is responsible for updating its UI according to various states.

Bug: 109828640
Change-Id: Ic8cbf3d404d5870de0f6b8fe25a332b8d21bae20
diff --git a/res/layout/launcher.xml b/res/layout/launcher.xml
index 304d012..87078b9 100644
--- a/res/layout/launcher.xml
+++ b/res/layout/launcher.xml
@@ -56,22 +56,25 @@
             android:id="@+id/drop_target_bar"
             layout="@layout/drop_target_bar" />
 
-        <include android:id="@+id/scrim_view"
+        <include
+            android:id="@+id/scrim_view"
             layout="@layout/scrim_view" />
 
         <include
             android:id="@+id/apps_view"
             layout="@layout/all_apps"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:visibility="invisible" />
+            android:layout_height="match_parent" />
 
         <!-- DO NOT CHANGE THE ID -->
-        <include
+        <com.android.launcher3.Hotseat
             android:id="@+id/hotseat"
-            layout="@layout/hotseat"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+            android:layout_height="match_parent"
+            android:theme="@style/HomeScreenElementTheme"
+            android:importantForAccessibility="no"
+            launcher:containerType="hotseat" />
+
     </com.android.launcher3.dragndrop.DragLayer>
 
 </com.android.launcher3.LauncherRootView>