### 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_
subscriptions = ctx.store.get_topic_subscriptions(topic_arn)
        for subscriber in subscriptions:
            protocol = subscriber["Protocol"]
            notifier = self.batch_topic_notifiers.get(protocol)
            
            if notifier:
                subscriber_ctx = ctx
                messages_amount_before_filtering = len(ctx.messages)
                filtered_messages = [
                    message
                    for message in ctx.messages
                    if self._should_publish(
                        ctx.store.subscription_filter_policy, message, subscriber
                    )
                ]
                if not filtered_messages:
                    LOG.debug(
                        "No messages match filter policy, not publishing batch from topic '%s' to subscription '%s'",
                        topic_arn,
                        subscriber["SubscriptionArn"],
                    )