Skip test for builtin method descriptor types

Author: msimacek

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_types.txt

@@ -65,6 +65,7 @@
 *graalpython.lib-python.3.test.test_types.TypesTests.test_int__format__
 *graalpython.lib-python.3.test.test_types.TypesTests.test_int__format__locale
 *graalpython.lib-python.3.test.test_types.TypesTests.test_internal_sizes
+*graalpython.lib-python.3.test.test_types.TypesTests.test_method_descriptor_types
 *graalpython.lib-python.3.test.test_types.TypesTests.test_method_wrapper_types
 *graalpython.lib-python.3.test.test_types.TypesTests.test_normal_integers
 *graalpython.lib-python.3.test.test_types.TypesTests.test_numeric_types

graalpython/lib-python/3/test/test_types.py

@@ -590,6 +590,7 @@ def test_method_wrapper_types(self):
         self.assertIsInstance(object().__lt__, types.MethodWrapperType)
         self.assertIsInstance((42).__lt__, types.MethodWrapperType)
 
+    @support.impl_detail(graalvm=False)
     def test_method_descriptor_types(self):
         self.assertIsInstance(str.join, types.MethodDescriptorType)
         self.assertIsInstance(list.append, types.MethodDescriptorType)