Simplifying all-apps search box

> Giving the search box a solid background so that it work fine with scrolling
> bottom shadow logic for search box

Bug: 73085356
Change-Id: Ie4dc4922be39ffd8e2d562becedbd4c6f820e6c9
diff --git a/res/layout/all_apps.xml b/res/layout/all_apps.xml
index 2ce6b8c..a7f0026 100644
--- a/res/layout/all_apps.xml
+++ b/res/layout/all_apps.xml
@@ -37,7 +37,7 @@
      platform bug, which prevents using custom attributes in <include> tag -->
     <include
         android:id="@id/search_container_all_apps"
-        layout="?android:attr/keyboardLayout"/>
+        layout="@layout/search_container_all_apps"/>
 
     <View
         android:id="@+id/nav_bar_bg"