docstr: Fail when the agent doesn't support dynamic batching.
code: def test_no_batch_act(self):
      """
      Fail when the agent doesn't support dynamic batching.
      """
      with self.assertRaises(TypeError):
          testing_utils.train_model(model="repeat_label", task=_TASK)
  
      with self.assertRaises(TypeError):
          testing_utils.eval_model(model="repeat_label", task=_TASK)
  
imports: from parlai.core.opt import Opt
  from parlai.tasks.integration_tests.agents import NUM_TEST, EXAMPLE_SIZE
  from parlai.utils.conversations import Conversations
  import parlai.utils.testing
  import os
  from typing import Dict, Any
  import unittest
label_desc: Use image node_id 3 for calling the TestDynamicBatching obj's underlying member method code with example usage: obj.test_no_batch_act() without return types