fix ECSOperator deprecation

[eladkal]

related: #20332

fix test failures:

  E               TypeError: Protocols can only inherit from other protocols, got <class 'airflow.providers.amazon.aws.operators.ecs.ECSProtocol'>
  
  /usr/local/lib/python3.7/site-packages/typing_extensions.py:1584: TypeError
  _ TestMovingCoreToContrib.test_warning_on_import_256_airflow_providers_amazon_aws_operators_ecs_ECSOperator _

and add correct deprecation

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[kaxil]

same as #20669 .

cc @uranusjr

[eladkal]

Closes in favor of #20669