fix: test from_raggedtensor on GPU (#3288)

* fix: test from_raggedtensor on GPU

* style: pre-commit fixes

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tests/test_3210_to_raggedtensor_from_raggedtensor.py

@@ -107,7 +107,9 @@ def test_convert_from_raggedtensor():
 
     ak_array1 = ak.contents.ListOffsetArray(offsets1, content1)
     result1 = ak.to_layout(from_raggedtensor(tf_array1), allow_record=False)
-    assert (result1.content.data == np_array1).all()
+    assert (
+        result1.content.data == ak.to_backend(np_array1, result1.backend).layout.data
+    ).all()
     assert (result1.offsets.data == [0, 2, 3, 3, 5]).all()
     assert from_raggedtensor(tf_array1).to_list() == ak_array1.to_list()