### 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.
snapshot.add_transformer(
            [
                snapshot.transform.key_value("Bucket", reference_replacement=False),
                snapshot.transform.key_value("DisplayName", reference_replacement=False),
                snapshot.transform.key_value("UploadId"),
                snapshot.transform.key_value("Location"),
                snapshot.transform.key_value(
                    "ID", value_replacement="owner-id", reference_replacement=False
                ),
            ]
        )
        key_name = "test-list-parts"
        response = aws_client.s3.create_multipart_upload(Bucket=s3_bucket, Key=key_name)
        snapshot.match("create-multipart", response)
        upload_id = response["UploadId"]
        list_part = aws_client.s3.list_parts(Bucket=s3_bucket, Key=key_name, UploadId=upload_id)
        snapshot.match("list-part-after-created", list_part)
        list_multipart_uploads = aws_client.s3.list_multipart_uploads(Bucket=s3_bucket)
        snapshot.match("list-all-uploads", list_multipart_uploads)
        
        data = "upload-part-1" * 5
        data = to_bytes(data)
        upload_file_ = BytesIO(data)