### 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.
<Key>{_key_1}</Key>
          </Object>
          <Object>
            <Key>{_key_2}</Key>
          </Object>
        </Delete>
        """
        md = hashlib.md5(data.encode("utf-8")).digest()
        contents_md5 = base64.b64encode(md).decode("utf-8")
        header = {"content-md5": contents_md5, "x-amz-request-payer": "requester"}
        r = .post(url=url, data=data, headers=header)
        assert 200 == r.status_code
        response = xmltodict.parse(r.content)
        response["DeleteResult"].pop("@xmlns", None)
        assert response["DeleteResult"]["Error"]["Key"] == _key_1
        assert response["DeleteResult"]["Error"]["Code"] == "AccessDenied"
        assert response["DeleteResult"]["Deleted"]["Key"] == _key_2
        snapshot.match("multi-delete-with-", response)
        response = aws_client.s3.list_s(Bucket=bucket_name)
        assert 200 == response["ResponseMetadata"]["HTTPStatusCode"]
        assert len(response["Contents"]) == 1
        snapshot.match("list-remaining-s", response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        paths=[
            "$..DeleteResult.Deleted..VersionId",
            "$..Prefix",
        ]
    )
    def test_s3_batch_delete_public_s_using_(