### 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_
@markers.aws.only_localstack
    def test_publish_to_platform_endpoint_can_retrospect(
        self, sns_create_topic, sns_subscription, sns_create_platform_application, aws_client
    ):
        sns_backend = SnsProvider.get_store(TEST_AWS_ACCOUNT_ID, TEST_AWS_REGION_NAME)
        # c
        sns_backend_endpoint_arns = list(sns_backend.platform_endpoint_messages.keys())
        for saved_endpoint_arn in sns_backend_endpoint_arns:
            sns_backend.platform_endpoint_messages.pop(saved_endpoint_arn, None)
        topic_arn = sns_create_topic()["TopicArn"]
        application_platform_name = f"app-platform-{short_uid()}"
        app_arn = sns_create_platform_application(
            Name=application_platform_name, Platform="APNS", Attributes={}
        )["PlatformApplicationArn"]
        endpoint_arn = aws_client.sns.create_platform_endpoint(
            PlatformApplicationArn=app_arn, Token=short_uid()
        )["EndpointArn"]
        endpoint_arn_2 = aws_client.sns.create_platform_endpoint(
            PlatformApplicationArn=app_arn, Token=short_uid()
        )["EndpointArn"]