message: Add an externally noop pytype_library BUILD rule.
diff: @@ -2170,6 +2170,10 @@ register_extension_info(
  label_regex_for_dep = "{extension_name}",
  )
  +def pytype_library(**kwargs):
  + # Types not enforced in OSS.
  + native.py_library(**kwargs)
  +
  def tf_py_test(
  name,
  srcs,
  