ci: Fix cudf again (#2614)

* Revert "ci: remove outdated cudf xfail (#2612)"

This reverts commit bf30c1f.

* remove the right xfail

Author: MarcoGorelli

tests/frame/getitem_test.py

@@ -314,7 +314,12 @@ def test_slice_with_series(
     assert_equal_data(result, expected)
 
 
-def test_horizontal_slice_with_series(constructor_eager: ConstructorEager) -> None:
+def test_horizontal_slice_with_series(
+    constructor_eager: ConstructorEager, request: pytest.FixtureRequest
+) -> None:
+    if "cudf" in str(constructor_eager):
+        # https://github.com/rapidsai/cudf/issues/18556
+        request.applymarker(pytest.mark.xfail)
     data = {"a": [1, 2], "c": [0, 2], "d": ["c", "a"]}
     nw_df = nw.from_native(constructor_eager(data), eager_only=True)
     result = nw_df[nw_df["d"]]
@@ -328,9 +333,6 @@ def test_horizontal_slice_with_series_2(
     if "pandas_pyarrow" in str(constructor_eager):
         # https://github.com/pandas-dev/pandas/issues/61311
         request.applymarker(pytest.mark.xfail)
-    if "cudf" in str(constructor_eager):
-        # https://github.com/rapidsai/cudf/issues/18556
-        request.applymarker(pytest.mark.xfail)
     data = {"a": [1, 2], "c": [0, 2], "d": ["c", "a"]}
     nw_df = nw.from_native(constructor_eager(data), eager_only=True)
     result = nw_df[:, nw_df["c"]]