Fixes a race condition in the global event manager, when the flow would start on the default executor faster than the child class's constructor exits.
Fixes a race condition in the global event manager, when the flow would start on the default executor faster than the child class's constructor exits.

bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn