### 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: ListObjectsV2Request,
    ) -> ListObjectsV2Output:
        response: ListObjectsV2Output = call_moto(context)
        encoding_type = request.get("EncodingType")
        if "EncodingType" not in response and encoding_type:
            response["EncodingType"] = encoding_type
        
        if delimiter := response.get("Delimiter"):
            delimiter = delimiter.strip()
            if delimiter != "/":
                response["Delimiter"] = quote(delimiter)
        if "BucketRegion" not in response:
            moto_backend = get_moto_s3_backend(context)
            bucket = get_bucket_from_moto(moto_backend, bucket=request["Bucket"])
            response["BucketRegion"] = bucket.region_name
        return response
    @handler("HeadObject", expand=False)
    def head_object(