Fixed -reverseTransformedValue:ofPropertyDescription call time
Fixed -reverseTransformedValue:ofPropertyDescription call time

This change ensures -reverseTransformedValue:ofPropertyDescription: is called in a way that is symmetric to -transformedValue:ofPropertyDescription:.

Note: this fixes test failures in EtoileUI test suite appearing with the previous commit.

chris-armstrong/CoreObject,chris-armstrong/CoreObject,etoile/CoreObject,etoile/CoreObject,chris-armstrong/CoreObject,chris-armstrong/CoreObject,etoile/CoreObject,etoile/CoreObject