### 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_
"""
    The SMS publisher is responsible for publishing the SNS message to a subscribed phone number.
    This is not directly implemented yet in LocalStack, we only save the message.
    # TODO: create an internal endpoint to retrieve SMS.
    """
    def _publish(self, context: SnsPublishContext, subscriber: SnsSubscription):
        event = self.prepare_message(context.message, subscriber)
        context.store.sms_messages.append(event)
        LOG.info(
            "Delivering SMS message to %s: %s from topic: %s",
            event["PhoneNumber"],
            event["Message"],
            event["TopicArn"],
        )
        
        delivery = {
            "phoneCarrier": "Mock Carrier",
            "mnc": 270,
            "priceInUSD": 0.00645,
            "smsType": "Transactional",
            "mcc": 310,
            "providerResponse": "Message has been accepted by phone carrier",
            "dwellTimeMsUntilDeviceAck": 200,
        }
        store_delivery_log(context.message, subscriber, success=True, delivery=delivery)
    def prepare_message(self, message_context: SnsMessage, subscriber: SnsSubscription) -> dict: