### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

It seems that it is possible to receive sns message in an sqs listener if there is a filterpolicy in place for null value in a message attribute, and a message is being sent without the message attribute.

### Expected Behavior

Don't recieve these type of messages

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

`sns subscribe --topic-arn "demoTopicArn"  --protocol sqs --notification-endpoint "demoSqsEndpoint" --attributes '{"RawMessageDelivery": "true"}'`
`sns set-subscription-attributes --subscription-arn demoSubsArn --attribute-name FilterPolicy --attribute-value '{"testForNull": [null,{"anything-but": ["notgood"]}]}'`
`sns publish --topic-arn demoTopicArn --message "testforrecieval"`
`sqs receive-message --queue-url  "demoUrl"`

### Environment

```markdown
- OS: macOS 13.6
- LocalStack: 2.2.0
```


### Anything else?

_No response_
self,
        sns_create_topic,
        sqs_create_queue,
        sqs_get_queue_arn,
        snapshot,
        aws_client,
        sns_subscription,
    ):
        topic_arn = sns_create_topic()["TopicArn"]
        queue_url = sqs_create_queue()
        queue_arn = sqs_get_queue_arn(queue_url)
        subscribe_resp = sns_subscription(
            TopicArn=topic_arn,
            Protocol="sqs",
            Endpoint=queue_arn,
            Attributes={
                "RawMessageDelivery": "true",
                "FilterPolicyScope": "MessageBody",
            },
            ReturnSubscriptionArn=True,
        )
        snapshot.match("subscribe", subscribe_resp)
        get_attrs_resp = aws_client.sns.get_subscription_attributes(
            SubscriptionArn=subscribe_resp["SubscriptionArn"]
        )