[TextKit] Fix text layout issue for CJK laungages (#3026)
[TextKit] Fix text layout issue for CJK laungages (#3026)

* [TextKit] Fix text layout issue for CJK laungages

* [ASTextKitContext] Delay filling _textStorage with attributedString until calling addLayoutManager.

lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,lappp9/AsyncDisplayKit,lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,flovouin/AsyncDisplayKit,flovouin/AsyncDisplayKit,maicki/AsyncDisplayKit,maicki/AsyncDisplayKit,lappp9/AsyncDisplayKit