### Description

Currently some code in RDS Operators use boto waiters and some uses a custom `_await_status`, the former is preferred over the later (waiters are vetted code provided by the boto sdk, they have features like exponential backoff, etc). See [this discussion thread](https://github.com/apache/airflow/pull/27076#discussion_r997325535) for more details/context.

### Use case/motivation

_No response_

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

del cls.dag
        del cls.hook
    @mock_rds
    @patch.object(RdsBaseOperator, "_await_status")
    def test_stop_db_instance(self, mock_await_status):
        _create_db_instance(self.hook)
        stop_db_instance = RdsStopDbOperator(task_id="test_stop_db_instance", db_identifier=DB_INSTANCE_NAME)
        _patch_hook_get_connection(stop_db_instance.hook)
        stop_db_instance.execute(None)
        result = self.hook.conn.describe_db_instances(DBInstanceIdentifier=DB_INSTANCE_NAME)
        status = result["DBInstances"][0]["DBInstanceStatus"]
        assert status == "stopped"
        mock_await_status.assert_called()
    @mock_rds
    @patch.object(RdsBaseOperator, "_await_status")
    def test_stop_db_instance_no_wait(self, mock_await_status):
        _create_db_instance(self.hook)
        stop_db_instance = RdsStopDbOperator(
            task_id="test_stop_db_instance_no_wait", db_identifier=DB_INSTANCE_NAME, wait_for_completion=False
        )
        _patch_hook_get_connection(stop_db_instance.hook)
        stop_db_instance.execute(None)
        result = self.hook.conn.describe_db_instances(DBInstanceIdentifier=DB_INSTANCE_NAME)
        status = result["DBInstances"][0]["DBInstanceStatus"]
        assert status == "stopped"
        mock_await_status.assert_not_called()
    @mock_rds
    def test_stop_db_instance_create_snapshot(self):