### 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
# s
            endpoints_arn[platform_type] = endpoint_arn
            # s
            sns_subscription(
                TopicArn=topic_arn,
                Protocol="application",
                Endpoint=endpoint_arn,
            )
        # n
        message = {
            "default": "This is the default message which must be present when publishing a message to a topic.",
            "APNS": '{"aps":{"alert": "Check out these awesome deals!","url":"www.amazon.com"} }',
            "GCM": '{"data":{"message":"Check out these awesome deals!","url":"www.amazon.com"}}',
        }
        # p
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=json.dumps(message),
            MessageStructure="json",
        )
        sns_backend = SnsProvider.get_store(TEST_AWS_ACCOUNT_ID, TEST_AWS_REGION_NAME)
        platform_endpoint_msgs = sns_backend.platform_endpoint_messages
        # a
        def check_message():
            assert len(platform_endpoint_msgs[endpoint_arn]) > 0
        retry(check_message, retries=PUBLICATION_RETRIES, sleep=PUBLICATION_TIMEOUT)
        # e
        assert platform_endpoint_msgs[endpoints_arn["GCM"]][0]["Message"] == message["GCM"]
        assert platform_endpoint_msgs[endpoints_arn["APNS"]][0]["Message"] == message["APNS"]
class TestSNSSMS: