Gets the chromatic adaptation matrix (chad), nine values row by row, or null when the profile has no
usable one.
public IReadOnlyList<double>? ChromaticAdaptation { get; }
ICC.1:2022 §9.2.15 and §10.22 (s15Fixed16ArrayType). It records how the profile's colorimetry was adapted to the PCS white; the tags already hold adapted values, so conversion does not apply it.