### 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_subscribe_platform_endpoint(
        self, sns_create_topic, sns_subscription, sns_create_platform_application, aws_client
    ):
        sns_backend = SnsProvider.get_store(TEST_AWS_ACCOUNT_ID, TEST_AWS_REGION_NAME)
        topic_arn = sns_create_topic()["TopicArn"]
        app_arn = sns_create_platform_application(Name="app1", Platform="p1", Attributes={})[
            "PlatformApplicationArn"
        ]
        platform_arn = aws_client.sns.create_platform_endpoint(
            PlatformApplicationArn=app_arn, Token="token_1"
        )["EndpointArn"]
        
        filter_policy = {"attr1": [{"numeric": [">", 0, "<=", 100]}]}
        sns_subscription(
            TopicArn=topic_arn,
            Protocol="application",
            Endpoint=platform_arn,
            Attributes={"FilterPolicy": json.dumps(filter_policy)},
        )
        
        message = "This is a test message"
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=message,
            MessageAttributes={"attr1": {"DataType": "Number", "StringValue": "99.12"}},
        )
        # a
        def check_message():