Inconsistency in the server response status between emulator and the deployed cloud function

According to [Retrying event-driven functions - Google Cloud Functions Documentation](https://cloud.google.com/functions/docs/bestpractices/retries):
> When retries are not enabled for a function, which is the default, the function always reports that it executed successfully, and returns 200 OK response. This occurs even if the function encountered an error.

There's no way to replicate this behavior locally. Please add a CLI flag like `--no-error` which would replicate this behavior.