LPS-39388 Convert the subscription_sender destination into synchronous mode when using a synchronous mode testing
LPS-39388 Remove non-required logic since it has been included in the testing infrastructure and apply the sync pattern everywhere is required
LPS-39388 Apply the synchronous pattern everywhere is required (this will remove tons of log errors which was caused when doing the tests in an asynchronous mode)
LPS-39388 Remove weird comment