Use secondary accent color for default colorized notification background.

Fixes: 192049115
Test: manual
Change-Id: I59097091cf6dd519ad8260395a046f3ba8aaae95

core/java/android/app/Notification.java

@@ -12362,7 +12362,7 @@ public class Notification implements Parcelable
 
             if (isColorized) {
                 if (rawColor == COLOR_DEFAULT) {
-                    int[] attrs = {R.attr.colorAccentTertiary};
+                    int[] attrs = {R.attr.colorAccentSecondary};
                     try (TypedArray ta = obtainDayNightAttributes(ctx, attrs)) {
                         mBackgroundColor = getColor(ta, 0, Color.WHITE);
                     }