Check to ensure that all tasks are accounted for in a given round

[apruden2008]

In the event that a participant is dropped, ensure that all tasks have been re-allocated appropriately and are accounted for

aleo-setup/phase1-coordinator/src/coordinator_state.rs

        // TODO (raychu86): Reevaluate this check. When a participant is dropped, all tasks
        //  are reassigned so the tasks will always be present.
        // Check that the participant does not have a assigned task remaining for this.
        // if self.assigned_tasks.contains(&task) {
        //     return Err(CoordinatorError::ParticipantStillHasTaskAsAssigned);
        // }