Dragging control rig Blueprint onto a sequence will fail to create a new spawnable

The class FControlRigObjectSpawner is set-up to spawn control rigs from a sequence, but it fails to implement and override for CreateNewSpawnableType, so spawnables can only be created by converting existing possessables.

1. Create a new Control Rig Blueprint
2. Open the control rig BP and select import hierarchy
3. Choose a mesh
4. Save the control rig BP
5. Drag the control rig BP asset onto a level sequence

RESULT

A spawnable will fail to be created with this error message:

"No spawner found to create new spawnable type"