Eventing : Document the workaround for MB-41508

Given that users might hit this unknowingly while debugging their functions, should be best to document the expectation as described as part of MB-41508 and the relevant workaround at least until we move to a newer V8 version.

Note: Should also put in a note that these steps are necessary only for development / staging clusters as users aren't expected to spawn a debugger in a live prod environment.