gh-113896: Fix test_builtin.BuiltinTest.test___ne__() (#113897)

Fix DeprecationWarning in test___ne__().

Co-authored-by: Nikita Sobolev <[email protected]>

Author: Eclips4

Lib/test/test_builtin.py

@@ -629,8 +629,8 @@ def __dir__(self):
 
     def test___ne__(self):
         self.assertFalse(None.__ne__(None))
-        self.assertTrue(None.__ne__(0))
-        self.assertTrue(None.__ne__("abc"))
+        self.assertIs(None.__ne__(0), NotImplemented)
+        self.assertIs(None.__ne__("abc"), NotImplemented)
 
     def test_divmod(self):
         self.assertEqual(divmod(12, 7), (1, 5))