gh-127945: add test_ctypes to free-threading TSAN CI (#132727)

Author: kumaraditya303

Lib/test/libregrtest/tsan.py

@@ -7,6 +7,7 @@
     'test_capi.test_mem',
     'test_capi.test_pyatomic',
     'test_code',
+    'test_ctypes',
     # 'test_concurrent_futures',  # gh-130605: too many data races
     'test_enum',
     'test_functools',

Lib/test/test_ctypes/test_as_parameter.py

@@ -5,7 +5,7 @@
                     c_short, c_int, c_long, c_longlong,
                     c_byte, c_wchar, c_float, c_double,
                     ArgumentError)
-from test.support import import_helper
+from test.support import import_helper, skip_if_sanitizer
 _ctypes_test = import_helper.import_module("_ctypes_test")
 
 
@@ -192,6 +192,7 @@ class S8I(Structure):
         self.assertEqual((s8i.a, s8i.b, s8i.c, s8i.d, s8i.e, s8i.f, s8i.g, s8i.h),
                              (9*2, 8*3, 7*4, 6*5, 5*6, 4*7, 3*8, 2*9))
 
+    @skip_if_sanitizer('requires deep stack', thread=True)
     def test_recursive_as_param(self):
         class A:
             pass