Summary: When pasting text longer than maxlenght, the textDidChange: call we did would end calling back into textView:shouldChange: because we saw an unexpected multi-character change. Since this is an expected mutation, update predictedText appropriately.
Reviewed By: majak
Differential Revision: D3561524
fbshipit-source-id: 07bb78d830ccfa3aed6ee274dc30adeadce9e1f8