### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When multi uploading a file for Glacier Instant Retrieval, the operation fails at Complete stage with a message claiming storage class not supported.

### Expected Behavior

It works with real S3.

### How are you starting LocalStack?

With the `localstack` script

### Steps To Reproduce

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

localstack start

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

 ```golang
	b, p := parse1(path)
	cmuI := &awsS3.CreateMultipartUploadInput{
		Bucket:       b,
		Key:          p,
		StorageClass: mtypes.StorageClassGlacierIr,
	}
_, err := client.CreateMultipartUpload(context.Background(), cmuI)

```
and process the upload of the part and then complete

### Environment

```markdown
- OS: Ubuntu 20.04
- LocalStack: pro latest
```


### Anything else?

_No response_
def __init__(self, message=None):
        super().__init__("UnexpectedContent", status_code=400, message=message)
def get_full_default_bucket_location(bucket_name):
    if config.HOSTNAME_EXTERNAL != config.LOCALHOST:
        return f"{config.get_protocol()}://{config.HOSTNAME_EXTERNAL}:{config.get_edge_port_http()}/{bucket_name}/"
    return f"{config.get_protocol()}://{bucket_name}.s3.{LOCALHOST_HOSTNAME}:{config.get_edge_port_http()}/"
class S3Provider(S3Api, ServiceLifecycleHook):
    @staticmethod
    def get_store() -> S3Store:
        return s3_stores[get_aws_account_id()][aws_stack.get_region()]
    def _clear_bucket_from_store(self, bucket: BucketName):
        store = self.get_store()
        store.bucket_lifecycle_configuration.pop(bucket, None)
        store.bucket_versioning_status.pop(bucket, None)
        store.bucket_cors.pop(bucket, None)
        store.bucket_notification_configs.pop(bucket, None)
        store.bucket_replication.pop(bucket, None)
        store.bucket_website_configuration.pop(bucket, None)
    def on_after_init(self):
        apply_moto_patches()
        preprocess_request.append(self._cors_handler)
        register_website_hosting_routes(router=ROUTER)
        register_custom_handlers()
        
        
    def __init__(self) -> None:
        super().__init__()
        self._notification_dispatcher = NotificationDispatcher()
        self._cors_handler = S3CorsHandler()
    def on_before_stop(self):