gh-131586: Avoid refcount contention in some "special" calls (#131588)

In the free threaded build, the `_PyObject_LookupSpecial()` call can lead to
reference count contention on the returned function object becuase it
doesn't use stackrefs. Refactor some of the callers to use
`_PyObject_MaybeCallSpecialNoArgs`, which uses stackrefs internally.

This fixes the scaling bottleneck in the "lookup_special" microbenchmark
in `ftscalingbench.py`. However, the are still some uses of
`_PyObject_LookupSpecial()` that need to be addressed in future PRs.

Lib/test/test_bool.py

@@ -383,6 +383,10 @@ class BoolTest(unittest.TestCase):
             __bool__ = None
         self.assertRaises(TypeError, bool, B())
 
+        class C:
+            __len__ = None
+        self.assertRaises(TypeError, bool, C())
+
     def test_real_and_imag(self):
         self.assertEqual(True.real, 1)
         self.assertEqual(True.imag, 0)

Lib/test/test_builtin.py

@@ -1746,6 +1746,11 @@ class BuiltinTest(ComplexesAreIdenticalMixin, unittest.TestCase):
         a[0] = a
         self.assertEqual(repr(a), '{0: {...}}')
 
+    def test_repr_blocked(self):
+        class C:
+            __repr__ = None
+        self.assertRaises(TypeError, repr, C())
+
     def test_round(self):
         self.assertEqual(round(0.0), 0.0)
         self.assertEqual(type(round(0.0)), int)

Lib/test/test_math.py

@@ -573,6 +573,8 @@ class MathTests(unittest.TestCase):
         #self.assertEqual(math.ceil(NINF), NINF)
         #self.assertTrue(math.isnan(math.floor(NAN)))
 
+        class TestFloorIsNone(float):
+            __floor__ = None
         class TestFloor:
             def __floor__(self):
                 return 42
@@ -588,6 +590,7 @@ class MathTests(unittest.TestCase):
         self.assertEqual(math.floor(FloatLike(41.9)), 41)
         self.assertRaises(TypeError, math.floor, TestNoFloor())
         self.assertRaises(ValueError, math.floor, TestBadFloor())
+        self.assertRaises(TypeError, math.floor, TestFloorIsNone(3.5))
 
         t = TestNoFloor()
         t.__floor__ = lambda *args: args