### 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
subscription_arn = subscription["SubscriptionArn"]
            subscription_attrs = aws_client.sns.get_subscription_attributes(
                SubscriptionArn=subscription_arn
            )
            assert subscription_attrs["Attributes"]["PendingConfirmation"] == "false"
        retry(check_subscription, retries=PUBLICATION_RETRIES, sleep=PUBLICATION_TIMEOUT)
        aws_client.sns.publish(TopicArn=topic_arn, Subject=subject, Message=message)
        
        events = retry(
            check_expected_lambda_log_events_length,
            retries=10,
            sleep=1,
            function_name=function_name,
            expected_length=1,
            regex_filter="Records.*Sns",
            logs_client=aws_client.logs,
        )
        notification = events[0]["Records"][0]["Sns"]
        snapshot.match("notification", notification)
class TestSNSProvider:
    @pytest.mark.aws_validated
    def test_publish_unicode_chars(