Summary:
JS side expects the property name to be "actionName", and this change updates it to that.
Changelog:
[iOS][Fixed] - Use actionName in accessibility event callback
Reviewed By: JoshuaGross
Differential Revision: D28645999
fbshipit-source-id: 0e7a6c3e6c1b6c998f4b53fd89c744c84083dfb1