Fix parquet previews for aka_asr (smaller row groups)

data/ASR/aka/aka-test-00000.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:032174ca12a55e94e2612d4a43b160024b26218527bbbdb53b72759f9cc3c89b
+size 482216690

data/ASR/aka/aka-train-00000.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:72ddc6d13ed8afa7762cf81ade508d9fe3710ba701404800d633cf8e479be09d
+size 629229457

data/ASR/aka/aka-train-00001.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:676f4eb155510db037d044605969a5bab1cff45ce3090b8fe94796b4fc882e1f
+size 627953779

data/ASR/aka/aka-train-00002.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:625c307b8ac8a8394174aa9bc0fb2e1f0159fb23db0d72be20859326c5e2de22
+size 631608263

data/ASR/aka/aka-train-00003.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:cb336554beb247e9993c091000473d482688d6be954e809eabf82737efe18f0c
+size 625996961

data/ASR/aka/aka-train-00004.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:1193a30b13537e0a69714642838fe5870d83a0c21743c9879230bc125b2f1b61
+size 624732413

data/ASR/aka/aka-train-00005.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:a6da43855ad08306576767b57c952134a301837db232f3e0f9b664a8c99126de
+size 33429457