### 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.
expiry_date = "Wed, 21 Oct 2015 07:28:00 GMT"
        presigned_client = _s3_client_custom_config(
            Config(signature_version=signature_version), endpoint_url=_endpoint_url()
        )
        url = presigned_client.generate_presigned_url(
            "get_",
            Params={
                "Bucket": s3_bucket,
                "Key": _key,
                "ResponseCacheControl": "max-age=74",
                "ResponseContentDisposition": 'attachment; filename="foo.jpg"',
                "ResponseContentEncoding": "identity",
                "ResponseContentLanguage": "de-DE",
                "ResponseContentType": "image/jpeg",
                "ResponseExpires": expiry_date,
            },
        )
        response = .get(url, verify=False)
        assert response.status_code == 200
        headers = response.headers
        assert headers["cache-control"] == "max-age=74"
        assert headers["content-disposition"] == 'attachment; filename="foo.jpg"'
        assert headers["content-encoding"] == "identity"
        assert headers["content-language"] == "de-DE"
        assert headers["content-type"] == "image/jpeg"
        # Note
        possible_date_formats = ["2015-10-21T07:28:00Z", expiry_date]
        assert headers["expires"] in possible_date_formats
    @pytest.mark.aws_validated
    def test_s3_copy_md5(self, s3_bucket, snapshot, s3_presigned_client, monkeypatch, aws_client):