Requiring sidekiq/testing changes stuff, so we need to counteract that
after we do so.
And given its potential to confuse things, let's do it up front, at a
predictable point.
Sidekiq logs the name of the job class being performed. Because
ActiveJob wraps the class, this means every job logs as an AJ::JobWrapper
instead of the actual class name.
Will help fixmperham/sidekiq#2248
