### 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
queue_url = sqs_create_queue()
        # c
        subscription = sns_create_s(topic_arn=topic_arn, queue_url=queue_url)
        filter_policy = {"attr1": [{"numeric": [">", 0, "<=", 100]}]}
        aws_client.sns.set_subscription_attributes(
            SubscriptionArn=subscription["SubscriptionArn"],
            AttributeName="FilterPolicy",
            AttributeValue=json.dumps(filter_policy),
        )
        response_attributes = aws_client.sns.get_subscription_attributes(
            SubscriptionArn=subscription["SubscriptionArn"],
        )
        snapshot.match("subscription-attributes", response_attributes)
        # p
        message = "This is a test message"
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=message,
            MessageAttributes={"attr1": {"DataType": "Number", "StringValue": "99.12"}},
        )
        # a
        response = aws_client.sqs.receive_message(
            QueueUrl=queue_url,
            VisibilityTimeout=0,
            MessageAttributeNames=["All"],
            WaitTimeSeconds=4,
        )
        snapshot.match("messages", response)
    @pytest.mark.only_localstack
    def test_subscribe_platform_endpoint(