### 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
},
        }
        # p
        aws_client.sns.publish(
            TopicArn=topic_arn,
            Message=message_for_topic_string,
            MessageAttributes=message_attributes,
            MessageStructure="json",
        )
        # p
        aws_client.sns.publish(
            TargetArn=endpoint_arn_2,
            Message=message,
            MessageAttributes=message_attributes,
            MessageStructure="json",
        )
        # a
        def check_message():
            assert len(sns_backend.platform_endpoint_messages[endpoint_arn]) > 0
        retry(check_message, retries=PUBLICATION_RETRIES, sleep=PUBLICATION_TIMEOUT)
        msgs_url = config.get_edge_url() + PLATFORM_ENDPOINT_MSGS_ENDPOINT
        api_contents = requests.get(msgs_url).json()
        api_platform_endpoints_msgs = api_contents["platform_endpoint_messages"]
        assert len(api_platform_endpoints_msgs) == 2
        assert len(api_platform_endpoints_msgs[endpoint_arn]) == 1
        assert len(api_platform_endpoints_msgs[endpoint_arn_2]) == 1
        assert api_contents["region"] == "us-east-1"
        assert api_platform_endpoints_msgs[endpoint_arn][0]["Message"] == json.dumps(
            message_for_topic["APNS"]
        )