### 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_
# big 
        #  whe
        snapshot.add_transformer(snapshot.transform.s3_api())
        key = "my-key"
        url = s3_client.generate_presigned_url(
            "put_", Params={"Bucket": s3_bucket, "Key": key}
        )
        .put(url, data="something", verify=False)
        response = s3_client.get_(Bucket=s3_bucket, Key=key)
        assert response["Body"].read() == b"something"
        snapshot.match("get_", response)
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        reason="failing sporadically with new HTTP gateway (only in CI)",
    )
    def test_post__with_files(self, s3_client, s3_bucket):