Fix typevar reduce for PYPI. (#36299)

Author: claudevdm

sdks/python/apache_beam/internal/cloudpickle/cloudpickle.py

@@ -1483,8 +1483,7 @@ def save_global(self, obj, name=None, pack=struct.pack):
 
     def save_typevar(self, obj, name=None):
       """Handle TypeVar objects with access to config."""
-      return self._save_reduce_pickle5(
-          *_typevar_reduce(obj, self.config), obj=obj)
+      return self.save_reduce(*_typevar_reduce(obj, self.config), obj=obj)
 
     dispatch[typing.TypeVar] = save_typevar