Deleting transform track can fail to restore state

Deleting the transform track for an actor that does not have a transform track by default can fail to restore state if there are no keys. 

1. Create a blueprint class inheriting from Actor
2. Add an instance of the class to the level
3. Create a new level sequence
4. Add the level instance of the blueprint to the sequence by dragging it from the world outliner
5. add a transform track to the actor
6. Move the actor
7. Delete the transform track

RESULT

The actor remains in the same spot instead of restoring state. Closing the sequence in 4.26 restores the position, closing in 4.27 does not.