What does this PR do ?

Fix #14168

Collection: [Note which collection this PR will affect]

Changelog

• Add specific line by line info of high level changes in this PR.

Usage

For data with chat_template

    data = FineTuningDataModule(
        dataset_root=DATA_ROOT,
        seq_length=max_sequence_length,
        global_batch_size=8,
        micro_batch_size=1,
        tokenizer=tokenizer,
        num_workers=4,
        packed_sequence_specs = PackedSequenceSpecs(packed_sequence_size=2048),
        dataset_kwargs=dict(
            chat=True,
            use_hf_tokenizer_chat_template=True,
        ),
    )

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Additional Information

• Related to Add dataset_kwargs in FineTuningDataModule #14168