Made the test to be xfailed

REF:
#32011 (comment)

Author: MomIsBestFriend

pandas/tests/scalar/timedelta/test_arithmetic.py

@@ -377,18 +377,18 @@ def test_td_div_numeric_scalar(self):
         assert isinstance(result, Timedelta)
         assert result == Timedelta(days=2)
 
+    @pytest.mark.xfail(
+        reason="Quick fix for https://github.com/pandas-dev/pandas/issues/31992"
+    )
     @pytest.mark.parametrize("nan", [np.nan, np.float64("NaN"), float("nan")])
     def test_td_div_nan(self, nan):
         # np.float64('NaN') has a 'dtype' attr, avoid treating as array
         td = Timedelta(10, unit="d")
         result = td / nan
         assert result is NaT
 
-        # TODO: Don't leave commented, this is just a temporary fix for
-        # https://github.com/pandas-dev/pandas/issues/31992
-
-        # result = td // nan
-        # assert result is NaT
+        result = td // nan
+        assert result is NaT
 
     # ---------------------------------------------------------------
     # Timedelta.__rdiv__