message: Fix graph_rewriter_test by extending compatibility horizon after compatibility window change in
  Also, extend the compatibility window in stateless_random_ops for stateless_random_normal to match with the window for _get_key_counter_alg.
diff: @@ -515,7 +515,7 @@ def stateless_random_normal(shape,
  shape = tensor_util.shape_tensor(shape)
  mean = ops.convert_to_tensor(mean, dtype=dtype, name="mean")
  stddev = ops.convert_to_tensor(stddev, dtype=dtype, name="stddev")
  - if compat.forward_compatible(2021, 2, 2):
  + if compat.forward_compatible(2021, 3, 1):
  key, counter, alg = _get_key_counter_alg(seed)
  rnd = gen_stateless_random_ops_v2.stateless_random_normal_v2(
  shape, key=key, counter=counter, dtype=dtype, alg=alg)
  