[Datasets] Preserve cached block metadata on LazyBlockList splits. (#25745)
[Datasets] Preserve cached block metadata on LazyBlockList splits. (#25745)

Preserves cached block metadata on LazyBlockList splits. Before this PR, after these splits, all block metadata would have to be re-fetched.
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray