### 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, sqs_create_queue, sns_create_topic, sns_create_sqs_subscription, snapshot, aws_client
    ):
        # h
        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"]
        aws_client.sns.set_subscription_attributes(
            SubscriptionArn=subscription_arn,
            AttributeName="FilterPolicyScope",
            AttributeValue="MessageBody",
        )
        nested_filter_policy = {
            "key_a": {
                "key_b": {"key_c": ["value_one", "value_two", "value_three", "value_four"]},
            },
            "key_d": {"key_e": ["value_one", "value_two", "value_three"]},
            "key_f": ["value_one", "value_two", "value_three"],
        }
        # T
        # n
        # 3 
        with pytest.raises(ClientError) as e:
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=subscription_arn,
                AttributeName="FilterPolicy",
                AttributeValue=json.dumps(nested_filter_policy),
            )
        snapshot.match("sub-filter-policy-nested-error-too-many-combinations", e.value.response)
        flat_filter_policy = {