### 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_
SubscriptionArn=sub_arn,
                AttributeName="RedrivePolicy",
                AttributeValue=json.dumps({"deadLetterTargetArn": "fake-arn"}),
            )
        snapshot.match("fake-arn-redrive-policy", e.value.response)
        with pytest.raises(ClientError) as e:
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=sub_arn,
                AttributeName="RedrivePolicy",
                AttributeValue="{invalidjson}",
            )
        snapshot.match("invalid-json-redrive-policy", e.value.response)
        assert e.value.response["Error"]["Message"].startswith(
            "Invalid parameter: RedrivePolicy: failed to parse JSON."
        )
        with pytest.raises(ClientError) as e:
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=sub_arn,
                AttributeName="FilterPolicy",
                AttributeValue="{invalidjson}",
            )
        snapshot.match("invalid-json-filter-policy", e.value.response)
        assert e.value.response["Error"]["Message"].startswith(
            "Invalid parameter: FilterPolicy: failed to parse JSON."
        )
    @markers.aws.validated
    @markers.snapshot.skip_snapshot_verify(
        paths=["$.invalid-token.Error.Message"]  
    )
    def test_sns_confirm_subscription_wrong_token(self, sns_create_topic, snapshot, aws_client):