Support indices contiguity per batch and non-contiguous values in sparse compressed tensors (#91243)
Fixes https://github.com/pytorch/pytorch/issues/91062
With this PR, all reported failures in https://github.com/pytorch/pytorch/pull/90849 are resolved (modulo test_bmm that uses an unorthodox way to construct a batch CSR tensor).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/91243
Approved by: https://github.com/nikitaved, https://github.com/amjames, https://github.com/lezcano
