added mEdgeSetFlags inside YogaNodeContext and using it YGJNI in getters/setters of margin, padding, border
added mEdgeSetFlags inside YogaNodeContext and using it YGJNI in getters/setters of margin, padding, border

Summary:
We have now create a yoga node context which consists of weak reference to java yoga node object and flag which tells us whether margin, padding , border are set or not.

This flag was initially in java layer and we have moved this to native layer as it will help us with enabling the bacthing API for setting style inputs.

Reviewed By: davidaurelio

Differential Revision: D14243378

fbshipit-source-id: fed935ef18c1abf2b07e5d69d9ca79ced51699f2

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