Document `LOG_TO_CLOUD`

Current behaviour

When attaching a logger to Prefects log handler, the logs don’t appear in Prefect Cloud. This is because PREFECT__LOGGING__LOG_TO_CLOUD defaults to False in the code. Additionally, this parameter is undocumented in the logging docs for Prefect.

Proposed behaviour

1. Document this parameter somewhere in https://docs.prefect.io/core/concepts/logging.html
2. Consider defaulting to True.

Example

Logging configuration is critical for best use of the Cloud UI. Defaulting to True would make this more discoverable and explicit.

[lauralorenz]

@arlobryer closing this issue for now since from our investigations it should be defaulted to True in this case, if you can get a reproducible example for us feel free to reopen. Thanks! 😃

[joshmeek]

@arlobryer Any chance you could provide a reproducible example? I’m looking through the code and it seems like the config should be automatically set when running in the context of a cloud/server run? 🤔