[server] Enable --trace-warnings on prod
[server] Enable --trace-warnings on prod

Summary: I'm seeing a lot of `MaxListenersExceededWarning` in the logs, and would like to understand a bit more about where they're coming from.

Reviewers: palys-swm

Reviewed By: palys-swm

Subscribers: KatPo, zrebcu411, Adrian

Differential Revision: https://phabricator.ashoat.com/D223

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