### 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_
self,
        context: RequestContext,
        request: PutObjectRequest,
    ) -> PutObjectOutput:
        if checksum_algorithm := request.get("ChecksumAlgorithm"):
            verify_checksum(checksum_algorithm, context.request.data, request)
        moto_backend = get_moto_s3_backend(context)
        bucket = get_bucket_from_moto(moto_backend, bucket=request["Bucket"])
        if not config.S3_SKIP_KMS_KEY_VALIDATION and (sse_kms_key_id := request.get("SSEKMSKeyId")):
            validate_kms_key_id(sse_kms_key_id, bucket)
        response: PutObjectOutput = call_moto(context)
        
        
        key_object = get_key_from_moto_bucket(bucket, key=request["Key"])
        if expires := request.get("Expires"):
            key_object.set_expiry(expires)
        elif "expires" in key_object.metadata:  
            metadata = {k: v for k, v in key_object.metadata.items() if k != "expires"}
            key_object.set_metadata(metadata, replace=True)
        self._notify(context)
        return response
    @handler("CopyObject", expand=False)
    def copy_object(