Summary:
The FlipperArray creation from JSONArray used to create an array of `null`'s instead of the FlipperObject, which used to crash the Flipper. Thus added a check in the flipper to not crash in the case when it receives array of nulls. Also fixed the Fresco plugin in mobile to send the proper FlipperArray.
Bug:
{F160049909}
Reviewed By: passy
Differential Revision: D15608297
fbshipit-source-id: 625e017d3bce4135ac699ee5aee8d871db378749
62c112c713