### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When re-subscribing an SQS queue to an SNS topic with the attribute "RawMessageDelivery=true", localstack throws an error.
It's occuring both on my AWS Java Client and with CLI awslocal
it's working well without this attribute


### Expected Behavior

Since the queue is subscribed with the attribute "RawMessageDelivery=true" to the topic already, it should be a no-op and simply return the same subscription arn.



### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    docker run localstack/localstack

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

```
awslocal sns create-topic --name localstack-topic
awslocal sqs create-queue --queue-name localstack-queue

awslocal sns subscribe   --topic-arn arn:aws:sns:eu-central-1:000000000000:localstack-topic    --protocol sqs    --notification-endpoint arn:aws:sqs:eu-central-1:000000000000:localstack-queue    --return-subscription-arn  --attributes RawMessageDelivery=True

awslocal sns subscribe   --topic-arn arn:aws:sns:eu-central-1:000000000000:localstack-topic    --protocol sqs    --notification-endpoint arn:aws:sqs:eu-central-1:000000000000:localstack-queue    --return-subscription-arn  --attributes RawMessageDelivery=True
```

### Environment

```markdown
aws-cli/1.22.34 Python/3.10.12 Linux/6.2.0-32-generic botocore/1.31.47
```


### Anything else?

subscription created with "RawMessageDelivery=true"

![image](https://github.com/localstack/localstack/assets/98832464/faac719d-b5fe-4920-a756-28abc17fd0e7)


but if the subscription is created without attributes it's working well 

![image](https://github.com/localstack/localstack/assets/98832464/44ed7afd-a3b2-4a19-aff4-cba7b75ad52c)


maybe it's related to https://github.com/localstack/localstack/issues/9058
subscription = sns_subscription(
                TopicArn=topic_arn, Protocol="http", Endpoint=http_endpoint
            )
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=subscription["SubscriptionArn"],
                AttributeName="RedrivePolicy",
                AttributeValue=json.dumps({"deadLetterTargetArn": dlq_arn}),
            )
            # w
            poll_condition(lambda: len(server.log) >= 1, timeout=10)
            request, _ = server.log[0]
            event = request.get_json(force=True)
            assert request.path.endswith("/subscription")
            assert event["Type"] == "SubscriptionConfirmation"
            assert event["TopicArn"] == topic_arn
            aws_client.sns.confirm_subscription(TopicArn=topic_arn, Token=event["Token"])
        wait_for_port_closed(server.port)
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=json.dumps({"message": "test_redrive_policy"}),
        )
        response = aws_client.sqs.receive_message(QueueUrl=dlq_url, WaitTimeSeconds=10)
        assert (
            len(response["Messages"]) == 1
        ), f"invalid number of messages in DLQ response {response}"
        message = json.loads(response["Messages"][0]["Body"])
        assert message["Type"] == "Notification"
        assert json.loads(message["Message"])["message"] == "test_redrive_policy"
    @markers.aws.manual_setup_required
    def test_multiple_subscriptions_http_endpoint(