Lanai - Interpolation constants should be mapped from AffineTransformOp

When we enqueBlit() operation in MTLBlitLoops.java, we use interpolation constants defined in AffineTransformOp.java

In current Lanai implementation, interpolation constants used in MetalPaints.m file are corresponding to values in SunHints.java.
Instead, these should be mapped to interpolation constants defined in AffineTransformOp.java.