Improve the quality of the error message emitted when there's a disagreement between the VariantCall call_set_name and the VCF header sample name.
Improve the quality of the error message emitted when there's a disagreement between the VariantCall call_set_name and the VCF header sample name.

PiperOrigin-RevId: 188377545

google/deepvariant,google/deepvariant,google/deepvariant