### 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
@markers.aws.only_localstack
    def test_topic_email_subscription_confirmation(
        self, sns_create_topic, sns_subscription, aws_client
    ):
        # F
        # c
        # f
        topic_arn = sns_create_topic()["TopicArn"]
        subscription = sns_subscription(
            TopicArn=topic_arn,
            Protocol="email",
            Endpoint="localstack@yopmail.com",
        )
        subscription_arn = subscription["SubscriptionArn"]
        parsed_arn = parse_arn(subscription_arn)
        store = SnsProvider.get_store(parsed_arn["account"], parsed_arn["region"])
        sub_attr = aws_client.sns.get_subscription_attributes(SubscriptionArn=subscription_arn)
        assert sub_attr["Attributes"]["PendingConfirmation"] == "true"
        def check_subscription():
            for token, sub_arn in store.subscription_tokens.items():
                if sub_arn == subscription_arn:
                    aws_client.sns.confirm_subscription(TopicArn=topic_arn, Token=token)
            sub_attributes = aws_client.sns.get_subscription_attributes(
                SubscriptionArn=subscription_arn
            )
            assert sub_attributes["Attributes"]["PendingConfirmation"] == "false"
        retry(check_subscription, retries=PUBLICATION_RETRIES, sleep=PUBLICATION_TIMEOUT)
class TestSNSFilter:
    @markers.aws.validated
    def test_filter_policy(