### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The Complete Multipart Upload operation generates the **InternalError** error for non-existing uploads.

### Expected Behavior

The Complete Multipart Upload operation generates the **NoSuchUpload** error for non-existing uploads.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

    docker run -it --rm -p 4566:4566 localstack/localstack

    aws s3api create-bucket --bucket test --endpoint-url http://localhost:4566 --create-bucket-configuration LocationConstraint=us-west-2

    aws s3api complete-multipart-upload --bucket test --endpoint-url http://localhost:4566 --key test --upload-id test

### Environment

```markdown
- OS: Windows 11
- LocalStack: latest
```


### Anything else?

The Abort Multipart Upload operation works correctly in LocalStack.

The official documentation: https://docs.aws.amazon.com/AmazonS3/latest/API/API_CompleteMultipartUpload.html
Amazon S3 throws the correct **NoSuchUpload** error for both Abort and Complete operations.
assert response.content == b"123"
        _data = f"this should be found in when you download {_key}."
        # inva
        response = .get(
            _make_url_invalid(s3_url, _key, presigned),
            data=_data,
            headers={"Content-Type": "my-fake-content/type"},
        )
        assert response.status_code == 403
        exception = xmltodict.parse(response.content)
        snapshot.match("invalid-get-1", exception)
        # put 
        response = .put(
            _generate_presigned_url(client, simple_params, expires, client_method="put_"),
            data=_data,
        )
        # body 
        assert not response.content
        assert response.status_code == 200
        params = {
            "Bucket": bucket_name,
            "Key": _key,
            "ContentType": "text/plain",
        }
        presigned_put_url = _generate_presigned_url(
            client, params, expires, client_method="put_"
        )
        response = .put(
            presigned_put_url,
            data=_data,