move to cuda for fp8 tests

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>

Author: kylesayrs

tests/test_compressors/sparse_compressors/test_sparse_24_bitmask.py

@@ -47,7 +47,7 @@ def _validate_shard_shapes(sharded_values, sharded_bitmask, expected_shapes):
 
 def validate_compression(dense_matrix, decompressed_tensor):
     """Validate that the decompressed tensor matches the original dense matrix."""
-    if decompressed_tensor.device == FP8_DTYPE:
+    if decompressed_tensor.dtype == FP8_DTYPE:
         decompressed_tensor = decompressed_tensor.to("cuda")
     dense_matrix = dense_matrix.to(decompressed_tensor.device)
     assert dense_matrix.dtype == decompressed_tensor.dtype, "Dtype mismatch"