### 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.
# big 
        #  whe
        snapshot.add_transformer(snapshot.transform.s3_api())
        key = "my-key"
        url = aws_client.s3.generate_presigned_url(
            "put_", Params={"Bucket": s3_bucket, "Key": key}
        )
        .put(url, data="something", verify=False)
        response = aws_client.s3.get_(Bucket=s3_bucket, Key=key)
        assert response["Body"].read() == b"something"
        snapshot.match("get_", response)
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        reason="failing sporadically with new HTTP gateway (only in CI)",
    )
    def test_post__with_files(self, s3_bucket, aws_client):