### 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.
# Boto 
        # aws_
        # Test 
        _key = "data"
        body = "Hello\r\n\r\n\r\n\r\n"
        headers = {
            "Authorization": aws_stack.mock_aws_request_headers("s3")["Authorization"],
            "Content-Type": "audio/mpeg",
            "X-Amz-Content-Sha256": "STREAMING-AWS4-HMAC-SHA256-PAYLOAD",
            "X-Amz-Date": "20190918T051509Z",
            "X-Amz-Decoded-Content-Length": str(len(body)),
        }
        data = (
            "d;chunk-signature=af5e6c0a698b0192e9aa5d9083553d4d241d81f69ec62b184d05c509ad5166af\r\n"
            f"{body}\r\n0;chunk-signature=f2a50a8c0ad4d212b579c2489c6d122db88d8a0d0b987ea1f3e9d081074a5937\r\n"
        )
        # put 
        url = f"{config.service_url('s3')}/{s3_bucket}/{_key}"
        .put(url, data, headers=headers, verify=False)
        # get 
        downloaded_ = aws_client.s3.get_(Bucket=s3_bucket, Key=_key)
        download_file_ = to_str(downloaded_["Body"].read())
        assert len(body) == len(str(download_file_))
        assert body == str(download_file_)
    @pytest.mark.only_localstack
    def test_virtual_host_proxy_does_not_decode_gzip(self, aws_client, s3_bucket):