fix: update test for DataFrame.__arrow_c_stream__ to check for registered destructor

Author: kosiew

python/tests/test_dataframe.py

@@ -1708,8 +1708,8 @@ def test_arrow_c_stream_capsule_released(ctx):
     get_destructor.restype = ctypes.c_void_p
     get_destructor.argtypes = [ctypes.py_object]
 
-    # The capsule should not have a registered destructor
-    assert get_destructor(capsule) == 0
+    # DataFrame.__arrow_c_stream__ uses PyCapsule::new, registering a destructor
+    assert get_destructor(capsule) != 0
 
     get_ptr = ctypes.pythonapi.PyCapsule_GetPointer
     get_ptr.restype = ctypes.c_void_p