Summary:
changelog: [internal]
Introduce a way to execute `onKeyPress` synchronously. This feature is experimental and will be changed in the future. It is not decided if marking native events as "sync" is going to be path forward with synchronous access.
NOTE: This is experimental API.
Reviewed By: ShikaSD
Differential Revision: D32882092
fbshipit-source-id: 68c66a9bb7c97758219e085c88a77f3c475c1eb3