### 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_
)
        snapshot.match("sub-attrs-filter-scope-body", subscription_attrs)
        # w
        with pytest.raises(ClientError) as e:
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=subscription_arn,
                AttributeName="FilterPolicyScope",
                AttributeValue="RandomValue",
            )
        snapshot.match("sub-attrs-filter-scope-error", e.value.response)
        # w
        aws_client.sns.set_subscription_attributes(
            SubscriptionArn=subscription_arn,
            AttributeName="FilterPolicy",
            AttributeValue=json.dumps({"attr": ["match-this"]}),
        )
        # t
        subscription_attrs = aws_client.sns.get_subscription_attributes(
            SubscriptionArn=subscription_arn
        )
        snapshot.match("sub-attrs-after-setting-policy", subscription_attrs)
    @markers.aws.validated
    def test_sub_filter_policy_nested_property(
        self, sqs_create_queue, sns_create_topic, sns_create_sqs_subscription, snapshot, aws_client
    ):
        topic_arn = sns_create_topic()["TopicArn"]
        queue_url = sqs_create_queue()
        subscription = sns_create_sqs_subscription(topic_arn=topic_arn, queue_url=queue_url)
        subscription_arn = subscription["SubscriptionArn"]
        # s