### 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,
        aws_client_factory,
        s3_create_bucket_with_client,
        snapshot,
        aws_client,
    ):
        snapshot.add_transformer(snapshot.transform.s3_api())
        snapshot.add_transformer(
            snapshot.transform.key_value("Location", "<location>", reference_replacement=False)
        )
        bucket_1_name = f"bucket-{short_uid()}"
        s3_create_bucket(Bucket=bucket_1_name)
        response = aws_client.s3.get_bucket_location(Bucket=bucket_1_name)
        snapshot.match("get_bucket_location_bucket_1", response)
        region_2 = "us-east-2"
        client_2 = aws_client_factory(region_name=region_2).s3
        bucket_2_name = f"bucket-{short_uid()}"
        s3_create_bucket_with_client(
            client_2,