The list does not follow the UX dialog design doc in alert dialog.

Please refer the comment#1 at bug and there are change below
- the divider is 4dp
- the item's radius is different in the list.

Bug: 216233391
Test: manual test: check the UI
make RunSettingsRoboTests ROBOTEST_FILTER=SimListDialogFragmentTest (PASS)

Change-Id: I758d60202fcf477aeb49014e60b949e7ad08c082

tests/robotests/src/com/android/settings/sim/SimListDialogFragmentTest.java

@@ -77,7 +77,7 @@ public class SimListDialogFragmentTest extends SimDialogFragmentTestBase<SimList
         doReturn(activity).when(mFragment).getActivity();
         doNothing().when(activity).onSubscriptionSelected(anyInt(), anyInt());
 
-        mFragment.onClick(alertDialog, 1);
+        mFragment.onClick(1);
         verify(activity).onSubscriptionSelected(dialogType, SIM2_ID);
     }
 
@@ -117,7 +117,7 @@ public class SimListDialogFragmentTest extends SimDialogFragmentTestBase<SimList
         doReturn(activity).when(mFragment).getActivity();
         doNothing().when(activity).onSubscriptionSelected(anyInt(), anyInt());
 
-        mFragment.onClick(alertDialog, 0);
+        mFragment.onClick(0);
         verify(activity).onSubscriptionSelected(dialogType,
                 SubscriptionManager.INVALID_SUBSCRIPTION_ID);
     }