Summary: When some drawing attributes of a view changes how it measures, we need to be able to relayout it correctly. This adds method `invalidate(View)` to `YogaLayout` which will flag the corresponding node as dirty and requiring layout again.
Reviewed By: emilsjolander
Differential Revision: D4634563
fbshipit-source-id: af7f47dce00a31414d0987a58307c5d44c1bcf20