Post date will always be more or less the time the log message is posted.
The logMessage variable in the alert action contains the full,
formatted log message that would be posted in a log channel as the
AUTOMOD_ACTION log type.
This loose pre-check checks the config schema by treating every object
as partial. This means that if a property exists, it's guaranteed to be
the correct type (e.g. object). However, there's no guarantee that all
or any properties exist.
This allows preprocessStaticConfig implementations to be much less
defensive and thus reduce boilerplate.
