change sparse COO comparison strategy in assert_close (#68728)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68728
This removes the ability for `assert_close` to `.coalesce()` the tensors internally. Additionally, we now also check `.sparse_dim()`. Sparse team: please make sure that is the behavior you want for all sparse COO comparisons in the future. #67796 will temporarily keep BC by always coalescing, but in the future `TestCase.assertEqual` will no longer do that.
cc nikitaved pearu cpuhrsch IvanYashchuk
Test Plan: Imported from OSS
Reviewed By: ngimel
Differential Revision: D33542996
Pulled By: mruberry
fbshipit-source-id: a8d2322c6ee1ca424e3efb14ab21787328cf28fc
