Adding parameter to _before hook

[jayudey-wf]

I was starting to implement typescript in a repo that utilizes codeceptJs and noticed that I couldn't compile because of a type mismatch.

This update makes the type definition match the current usage in codeceptJs I believe, https://github.com/codeceptjs/CodeceptJS/blob/master/lib/listener/helpers.js#L45-L48

Thanks!

[jayudey-wf]

@DavertMik for your review

sorry if you already got a notification 😢 , I don't know how the notifications are set up

[DavertMik]

Thanks!