### 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
message_contexts = []
        for entry in publish_batch_request_entries:
            message_attributes = entry.get("MessageAttributes", {})
            if message_attributes:
                
                
                validate_message_attributes(message_attributes)
            
            if entry.get("MessageStructure") == "json":
                try:
                    message = json.loads(entry.get("Message"))
                    
                    
                    
                    message = {
                        key: field for key, field in message.items() if isinstance(field, str)
                    }
                    if "default" not in message:
                        raise InvalidParameterException(
                            "Invalid parameter: Message Structure - No default entry in JSON message body"
                        )
                    entry["Message"] = message  
                except json.JSONDecodeError:
                    raise InvalidParameterException(
                        "Invalid parameter: Message Structure - JSON message body failed to parse"
                    )
            if is_fifo := (".fifo" in topic_arn):
                if not all(["MessageGroupId" in entry for entry in publish_batch_request_entries]):
                    raise InvalidParameterException(