### 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.
data="something",
            verify=False,
            headers={
                "Origin": "https://localhost:4201",
                "Content-Type": "application/pdf",
            },
        )
        assert result.status_code == 200
        snapshot.match("raw-response-headers-4", dict(result.headers))
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        paths=[
            "$..Access-Control-Allow-Headers",
            "$..Connection",
            "$..Location",
            "$..Vary",
            "$..Content-Type",
            "$..x-amzn-requestid",
            "$..last-modified",
            "$..accept-ranges",
            "$..content-language",
            "$..content-md5",
            "$..content-type",
            "$..x-amz-version-id",
            "$..Last-Modified",
            "$..Accept-Ranges",
            "$..raw-response-headers-2.Access-Control-Allow-Credentials",
        ]
    )
    def test_cors_configurations(self, s3_create_bucket, monkeypatch, snapshot, aws_client):