### 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_
QueueUrl=queue_url, VisibilityTimeout=0, WaitTimeSeconds=4
        )
        snapshot.match("messages-1", response_1)
        num_msgs_1 = len(response_1["Messages"])
        assert num_msgs_1 == (num_msgs_0 + 1)
        # p
        message_2 = "message-2"
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=message_2,
            MessageAttributes={"attr1": {"DataType": "Number", "StringValue": "111"}},
        )
        response_2 = aws_client.sqs.receive_message(
            QueueUrl=queue_url, VisibilityTimeout=0, WaitTimeSeconds=4
        )
        snapshot.match("messages-2", response_2)
        num_msgs_2 = len(response_2["Messages"])
        assert num_msgs_2 == num_msgs_1
        # d
        aws_client.sqs.delete_message(
            QueueUrl=queue_url, ReceiptHandle=response_1["Messages"][0]["ReceiptHandle"]
        )
        # t
        filter_policy = json.dumps({"store": [{"exists": False}]})
        aws_client.sns.set_subscription_attributes(
            SubscriptionArn=subscription_arn,
            AttributeName="FilterPolicy",
            AttributeValue=filter_policy,
        )
        def get_filter_policy():