### 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, sns_subscription, sns_create_platform_application, aws_client
    ):
        topic_arn = sns_create_topic()["TopicArn"]
        endpoints_arn = {}
        for platform_type in ["APNS", "GCM"]:
            application_platform_name = f"app-platform-{platform_type}-{short_uid()}"
            # C
            app_arn = sns_create_platform_application(
                Name=application_platform_name, Platform=platform_type, Attributes={}
            )["PlatformApplicationArn"]
            endpoint_arn = aws_client.sns.create_platform_endpoint(
                PlatformApplicationArn=app_arn, Token=short_uid()
            )["EndpointArn"]
            # s
            endpoints_arn[platform_type] = endpoint_arn
            # s
            sns_subscription(
                TopicArn=topic_arn,
                Protocol="application",
                Endpoint=endpoint_arn,
            )
        # n
        message = {