### 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.
self,
        s3_create_bucket,
        signature_version,
        verify_signature,
        monkeypatch,
        snapshot,
        aws_client,
    ):
        snapshot.add_transformer(self._get_presigned_snapshot_transformers(snapshot))
        snapshotted = False
        if verify_signature:
            monkeypatch.setattr(config, "S3_SKIP_SIGNATURE_VALIDATION", False)
            snapshotted = True
        else:
            monkeypatch.setattr(config, "S3_SKIP_SIGNATURE_VALIDATION", True)
        bucket_name = f"bucket-{short_uid()}"
        _key = "test-runtime.properties"
        content_md5 = "pX8KKuGXS1f2VTcuJpqjkw=="
        headers = {
            "Content-Md5": content_md5,
            "Content-Type": "application/octet-stream",
            "X-Amz-Content-Sha256": "STREAMING-AWS4-HMAC-SHA256-PAYLOAD",
            "X-Amz-Date": "20211122T191045Z",
            "X-Amz-Decoded-Content-Length": "test",  # stri
            "Content-Length": "10",