Aim Offset points update position when the scale of the graph is changed in Persona

This is a regression from 4.14.3 at CL 3251583

1. Open ContentExamples
2. Create a new Aim Offset asset and select Owen_Skeleton
3. Open the asset in Persona
4. From the asset browse drag AO_LU to the top left point in the graph
5. In the Asset Details Panel expand Vertical Axis
6. Change the min value to -180 and the max value to 180

Result: AO_LU point updates from a value of 100 to 180 on the aim offset graph
Expected: AO_LU point becomes invalid because 100 is not a valid point on the graph