Fix color picker preview cropped in RTL (2/2)

The issue is related to how linear layout resolves layout directions. In
OnMeasure, layout direction has been resolved and therefore adding
start and end margins creates unexpected results. Add margins in xml
directly to resolve.

Flag: EXEMPT bug fix
Bug: 345608553
Test: manually verified with RTL and LTR
Change-Id: I26fc403d2bb26ff35514f217954abf72531d4700
diff --git a/res/layout/fragment_color_picker.xml b/res/layout/fragment_color_picker.xml
index d33fb1f..7870140 100644
--- a/res/layout/fragment_color_picker.xml
+++ b/res/layout/fragment_color_picker.xml
@@ -44,7 +44,8 @@
             android:id="@+id/lock_preview"
             layout="@layout/wallpaper_preview_card"
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content"/>
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="12dp"/>
 
         <include
             android:id="@+id/home_preview"