nDCG can not be called with float targets

nDCG can not be called with float targets: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Invoking RetrievalNormalizedNDCG & retrieval normalized dcg with target of type float results into ValueError: target must be a tensor of booleans or integers