Revert "[MPS] enable cat op for sparse (#162007)"

This reverts commit 2c03f0acc53ed13fe8ebfe809129f25996e009a0.

Reverted https://github.com/pytorch/pytorch/pull/162007 on behalf of https://github.com/jeanschmidt due to Breaks internal builds see [D81588372](https://www.internalfb.com/diff/D81588372), @malfet may you help the author? ([comment](https://github.com/pytorch/pytorch/pull/162007#issuecomment-3255357336))

aten/src/ATen/native/native_functions.yaml

@@ -1412,7 +1412,7 @@
 - func: cat(Tensor[] tensors, int dim=0) -> Tensor
   structured_delegate: cat.out
   dispatch:
-    SparseCPU, SparseCUDA, SparseMPS: cat_sparse
+    SparseCPU, SparseCUDA: cat_sparse
     QuantizedCPU: cat_quantized_cpu
     NestedTensorCPU, NestedTensorHPU, NestedTensorCUDA: cat_nested
   tags: core

test/test_sparse.py

@@ -1121,9 +1121,9 @@ class TestSparse(TestSparseBase):
         x.sub_(2 * x)
         self.assertLessEqual(x._nnz(), 10)
 
+    @expectedFailureMPS
     @coalescedonoff
     @dtypes(torch.double, torch.cdouble)
-    @dtypesIfMPS(torch.float32, torch.complex64)
     def test_cat(self, device, dtype, coalesced):
         # shapes: list of tuples (sparse_dims, nnz, sizes)
         def test_shapes(shapes, dim, fail_message=None):