TST: Fix xfailed offset test (#33874)

Author: jbrockmendel

pandas/tests/tseries/offsets/test_offsets_properties.py

@@ -123,11 +123,12 @@ def test_apply_index_implementations(offset, rng):
     # TODO: Check randomly assorted entries, not just first/last
 
 
-@pytest.mark.xfail  # TODO: reason?
 @given(gen_yqm_offset)
 def test_shift_across_dst(offset):
     # GH#18319 check that 1) timezone is correctly normalized and
     # 2) that hour is not incorrectly changed by this normalization
+    assume(not offset.normalize)
+
     # Note that dti includes a transition across DST boundary
     dti = pd.date_range(
         start="2017-10-30 12:00:00", end="2017-11-06", freq="D", tz="US/Eastern"