### 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_
assert "content-type" in response.headers
        assert "text/html" == response.headers["content-type"]
        assert "etag" in response.headers
        assert actual_key_obj["ETag"] in response.headers["etag"]
        # If-N
        response = .get(
            url, headers={"If-None-Match": actual_key_obj["ETag"]}, verify=False
        )
        assert 304 == response.status_code
        # key 
        url = f"{website_url}/with-content-type/key.js"
        response = .get(url, verify=False)
        assert 200 == response.status_code
        assert "some js" == response.text
        assert "content-type" in response.headers
        assert "application/javascript; charset=utf-8" == response.headers["content-type"]
        assert "etag" in response.headers
        assert with_content_type_obj["ETag"] == response.headers["etag"]
        # inde
        url = f"{website_url}/test"
        response = .get(url, verify=False)
        assert 200 == response.status_code
        assert "index" == response.text
        assert "content-type" in response.headers
        assert "text/html" in response.headers["content-type"]
        assert "etag" in response.headers
        assert index_obj["ETag"] == response.headers["etag"]
        # root 
        url = f"{website_url}/"
        response = .get(url, verify=False)