Longer term, the goal is to construct ServiceContext instances after execution of MONGO_INITIALIZERS completes. Doing this requires that developers be able to register extra actions to take on each ServiceContext's construction and destruction, and that registration naturally belongs inside MONGO_INITIALIZERS. This task is to partially revert the work that caused the global ServiceContext to be constructed before execution of MONGO_INITIALIZERS, in such a way that enables the longer term goal.