After split_multi, LGT is dropped from the variant data of a VDS. After PR #14560, LGT is added to datasets after creation via the combiner. After #14675 the same is true for from_merged_representation. We should keep the GT/LGT field consistent across ref and var data. This change does so for split_multi.
After split_multi, LGT is dropped from the variant data of a VDS. After PR #14560, LGT is added to datasets after creation via the combiner. After #14675 the same is true for
from_merged_representation. We should keep the GT/LGT field consistent across ref and var data. This change does so for split_multi.Resolves #14694