Fix [AR] - Icons are slightly overlapping adjacent text in the Allow Accessibility demo

Root cause: Use marginRight between icon and text, but it does not work for RTL launguage.
Solution: Use margineEnd instead.

Bug: 189221008
Test: Manual testing
Change-Id: I02d30228c80c95aeb3b875364f2d2cbf76f3664b
diff --git a/res/values/styles.xml b/res/values/styles.xml
index a5b187b..7b8a75d 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -648,7 +648,7 @@
     <style name="AccessibilityDialogIcon">
         <item name="android:layout_width">18dp</item>
         <item name="android:layout_height">18dp</item>
-        <item name="android:layout_marginRight">12dp</item>
+        <item name="android:layout_marginEnd">12dp</item>
         <item name="android:scaleType">fitCenter</item>
     </style>