### 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_
# forw
        # (dat
        key = "test-double-headers"
        s3_client.put_(Bucket=s3_bucket, Key=key, Body="test-headers", ACL="public-read")
        key_url = f"{_bucket_url(bucket_name=s3_bucket)}/{key}"
        response = .get(key_url)
        assert response.headers["server"]
        key_url = f"{_bucket_url_vhost(bucket_name=s3_bucket)}/{key}"
        proxied_response = .get(key_url)
        assert proxied_response.headers["server"] == response.headers["server"]
        assert len(proxied_response.headers["server"].split(",")) == 1
        assert len(proxied_response.headers["date"].split(",")) == 2  # coma 
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        condition=LEGACY_S3_PROVIDER, reason="Validation not implemented in legacy provider"
    )
    def test_s3_sse_validate_kms_key(
        self,
        s3_client,
        s3_create_bucket,