### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When passed to SQS, keys of the messages attributes on SNS are renamed from StringValue to Value and DataType to Type.

### Expected Behavior

The keys should not be renamed

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    docker run localstack/localstack

#### Flow
 - Create a SQS Queue
 - Create a SNS Topic
 - Configure a Subscription of the new Topic that sends to the SQS queue (specify a raw delivery at true)
 - Publish a message to SNS Topic with attribute { DataType: "string", StringValue: "anything"}
 - Attributes are no more StringValue but just value. 

(can't provide more, I have issues with my awslocal, I got this issue with the PHP client initially)

### Environment

```markdown
- OS: Docker Desktop for mac
- LocalStack: 1.4
```


### Anything else?

The AWS SNS official documentation : https://docs.aws.amazon.com/sns/latest/api/API_MessageAttributeValue.html


MR for fix is coming
self, sns_create_topic, sqs_create_queue, sns_create_s, snapshot, aws_client
    ):
        topic_arn = sns_create_topic()["TopicArn"]
        queue_url = sqs_create_queue()
        subscription_attrs = sns_create_s(topic_arn=topic_arn, queue_url=queue_url)
        def check_subscription():
            nonlocal subscription_attrs
            if not subscription_attrs["PendingConfirmation"] == "false":
                subscription_arn = subscription_attrs["SubscriptionArn"]
                subscription_attrs = aws_client.sns.get_subscription_attributes(
                    SubscriptionArn=subscription_arn
                )["Attributes"]
            else:
                snapshot.match("subscription-attrs", subscription_attrs)
            return subscription_attrs["PendingConfirmation"] == "false"
        # S
        assert poll_condition(check_subscription, timeout=5)
    @pytest.mark.aws_validated
    def test_sns_topic_as_lambda_dead_letter_queue(
        self,
        lambda_su_role,
        create_lambda_function,
        sns_create_topic,
        sqs_create_queue,
        sns_subscription,
        sns_create_s,
        snapshot,
        aws_client,