### 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
self, context: RequestContext, resource_arn: AmazonResourceName, tags: TagList
    ) -> TagResourceResponse:
        
        
        unique_tag_keys = {tag["Key"] for tag in tags}
        if len(unique_tag_keys) < len(tags):
            raise InvalidParameterException("Invalid parameter: Duplicated keys are not allowed.")
        call_moto(context)
        store = self.get_store(context.account_id, context.region)
        existing_tags = store.sns_tags.get(resource_arn, [])
        def existing_tag_index(_item):
            for idx, tag in enumerate(existing_tags):
                if _item["Key"] == tag["Key"]:
                    return idx
            return None
        for item in tags:
            existing_index = existing_tag_index(item)
            if existing_index is None:
                existing_tags.append(item)
            else:
                existing_tags[existing_index] = item
        store.sns_tags[resource_arn] = existing_tags
        return TagResourceResponse()
    def delete_topic(self, context: RequestContext, topic_arn: topicARN) -> None: