### 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, conditions, attribute, field_exists: bool
    ):
        if not isinstance(conditions, list):
            conditions = [conditions]
        tpe = attribute.get("DataType") or attribute.get("Type") if attribute else None
        val = attribute.get("StringValue") or attribute.get("Value") if attribute else None
        if attribute is not None and tpe == "String.Array":
            try:
                values = json.loads(val)
            except ValueError:
                return False
            for value in values:
                for condition in conditions:
                    if self._evaluate_condition(value, condition, field_exists):
                        return True
        else:
            for condition in conditions:
                value = val or None
                if self._evaluate_condition(value, condition, field_exists):
                    return True
        return False
    def _evaluate_filter_policy_conditions_on_field(self, conditions, value, field_exists: bool):