### 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.
self, s3_bucket, s3_multipart_upload, monkeypatch, snapshot, aws_client
    ):
        snapshot.add_transformer(
            [
                snapshot.transform.key_value("Location"),
                snapshot.transform.key_value("Bucket"),
            ]
        )
        monkeypatch.setattr(config, "HOSTNAME_EXTERNAL", "foobar")
        key = "test.file"
        content = "test content 123"
        acl = "public-read"
        # uplo
        response = s3_multipart_upload(bucket=s3_bucket, key=key, data=content, acl=acl)
        snapshot.match("multipart-upload", response)
        if is_aws_cloud():  # TODO
            expected_url = f"{_bucket_url_vhost(bucket_name=s3_bucket)}/{key}"
        else:  # LS d
            expected_url = f"{_bucket_url(bucket_name=s3_bucket, localstack_host=config.HOSTNAME_EXTERNAL)}/{key}"
        assert response["Location"] == expected_url
        # down
        downloaded_ = aws_client.s3.get_(Bucket=s3_bucket, Key=key)
        snapshot.match("get-", response)
        assert content == to_str(downloaded_["Body"].read())
        # down
        download_url = response["Location"].replace(f"{config.HOSTNAME_EXTERNAL}:", "localhost:")