Summary: These were accidentally supported because they were merged at a lower
level. That's an implementation detail. setNativeProps should still
normalize the API.
I fixed some callers.
Setting props the normal way used to ignore these. Unfortunately we can't
warn for those cases because lots of extra props are spread. (The classic
transferPropsTo issue.)
@public
Reviewed By: @vjeux
Differential Revision: D2514228
fb-gh-sync-id: 00ed6073827dc1924da20f3d80cbdf68d8a8a8fc