### 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, context: RequestContext, request: CompleteMultipartUploadRequest
    ) -> CompleteMultipartUploadOutput:
        parts = request.get("MultipartUpload", {}).get("Parts", [])
        parts_numbers = [part.get("PartNumber") for part in parts]
        
        if sorted(parts_numbers) != parts_numbers:
            raise InvalidPartOrder(
                "The list of parts was not in ascending order. Parts must be ordered by part number.",
                UploadId=request["UploadId"],
            )
        response: CompleteMultipartUploadOutput = call_moto(context)
        
        response[
            "Location"
        ] = f'{get_full_default_bucket_location(request["Bucket"])}{response["Key"]}'
        self._notify(context)
        return response
    @handler("ListMultipartUploads", expand=False)
    def list_multipart_uploads(