[ASLayoutTransition] Remove taking a snapshot in the default layout transition code (#2940)
[ASLayoutTransition] Remove taking a snapshot in the default layout transition code (#2940)

* Remove taking a snapshot in the default default layout transition code

* Set groupOpacity for root node of animation to true before and restore after animation finished

rmls/AsyncDisplayKit,rmls/AsyncDisplayKit,flovouin/AsyncDisplayKit,flovouin/AsyncDisplayKit,rmls/AsyncDisplayKit,flovouin/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,rmls/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,maicki/AsyncDisplayKit,rmls/AsyncDisplayKit,maicki/AsyncDisplayKit,lappp9/AsyncDisplayKit,flovouin/AsyncDisplayKit,maicki/AsyncDisplayKit,lappp9/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit,lappp9/AsyncDisplayKit,flovouin/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,maicki/AsyncDisplayKit