Avoid checking Py_TPFLAGS_HAVE_FINALIZE in Py3.8 and later since CPython now...

Avoid checking Py_TPFLAGS_HAVE_FINALIZE in Py3.8 and later since CPython now relies on the feature being there.

Cython/Compiler/ModuleNode.py

@@ -1458,7 +1458,8 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                 finalised_check = (
                     '(!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))')
             code.putln(
-                "if (unlikely(PyType_HasFeature(Py_TYPE(o), Py_TPFLAGS_HAVE_FINALIZE)"
+                "if (unlikely("
+                "(PY_VERSION_HEX >= 0x03080000 || PyType_HasFeature(Py_TYPE(o), Py_TPFLAGS_HAVE_FINALIZE))"
                 " && Py_TYPE(o)->tp_finalize) && %s) {" % finalised_check)
             # if instance was resurrected by finaliser, return
             code.putln("if (PyObject_CallFinalizerFromDealloc(o)) return;")