Fix overlapping problem on popup window

When user clicks spinner widget, spinner creates a popup window.
So, we need to override clipToPadding and clipToChildren attributes
to prevent view from overlapping problem.

Fixes: 135030069
Test: visual
Change-Id: I4285e824437cb32ee0613961ffe417348d2538b4

res/layout/apps_filter_spinner.xml

@@ -27,7 +27,8 @@
         android:layout_width="wrap_content"
         android:layout_centerHorizontal="true"
         android:layout_marginTop="16dp"
-        android:layout_marginBottom="8dp"/>
+        android:layout_marginBottom="8dp"
+        android:theme="@style/Widget.PopupWindow.Settings"/>
 
     <ImageView
         android:id="@+id/filter_settings"

res/values/styles.xml

@@ -651,4 +651,10 @@
         <item name="android:background">?android:attr/selectableItemBackground</item>
     </style>
 
+    <style name="Widget.PopupWindow.Settings"
+           parent="@android:style/Widget.DeviceDefault.PopupWindow">
+        <item name="android:clipToPadding">true</item>
+        <item name="android:clipChildren">true</item>
+    </style>
+
 </resources>