### 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_
headers_parts = re.split(r"([A-Z][a-z]+)", capitalized_field)
    return f"x-amz-{'-'.join([part.lower() for part in headers_parts if part])}"
def is_valid_canonical_id(canonical_id: str) -> bool:
    """
    Validate that the string is a hex string with 64 char
    """
    try:
        return int(canonical_id, 16) and len(canonical_id) == 64
    except ValueError:
        return False
def forwarded_from_virtual_host_addressed_request(headers: Dict[str, str]) -> bool:
    """
    Determines if the request was forwarded from a v-host addressing style into a path one
    """
    
    
    match = re.match(S3_VIRTUAL_HOSTNAME_REGEX, headers.get(S3_VIRTUAL_HOST_FORWARDED_HEADER, ""))
    
    return True if match and match.group(3) else False
def get_bucket_from_moto(
    moto_backend: moto_s3_models.S3Backend, bucket: BucketName
) -> moto_s3_models.FakeBucket:
    
    try:
        return moto_backend.get_bucket(bucket_name=bucket)
    except MissingBucket:
        ex = NoSuchBucket("The specified bucket does not exist")
        ex.BucketName = bucket
        raise ex
def get_key_from_moto_bucket(