### 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_
# buck
        bucket_name = f"testuppercase-{short_uid()}"
        s3_create_bucket(Bucket=bucket_name)
        # key 
        _key = "camelCaseKey"
        s3_client.put_(Bucket=bucket_name, Key=_key, Body="something")
        res = s3_client.get_(Bucket=bucket_name, Key=_key)
        snapshot.match("response", res)
        with 
            s3_client.get_(Bucket=bucket_name, Key="camelcasekey")
        snapshot.match("wrong-case-key", e.value.response)
    @pytest.mark.aws_validated
    def test_s3_download__with_lambda(
        self,
        s3_client,
        s3_create_bucket,
        create_lambda_function,
        lambda_client,
        lambda_su_role,
        logs_client,
    ):
        bucket_name = f"bucket-{short_uid()}"
        function_name = f"func-{short_uid()}"
        key = f"key-{short_uid()}"
        s3_create_bucket(Bucket=bucket_name)
        s3_client.put_(Bucket=bucket_name, Key=key, Body="something..")
        create_lambda_function(
            handler_file=os.path.join(