fix StreamUserListTile to receive tileColor properly

the tileColor was not repassed to ListTile

packages/stream_chat_flutter/lib/src/scroll_view/user_scroll_view/stream_user_list_tile.dart

@@ -157,6 +157,7 @@ class StreamUserListTile extends StatelessWidget {
       trailing: selected ? selectedWidget : null,
       title: title,
       subtitle: subtitle,
+      tileColor: tileColor,
     );
   }
 }