Proactive mode, look in every field for the given id reference.

[SkeloGH]

Is your feature request related to a problem? Please describe.
When running, it scans the documents matching the id-looking values found in the fields and tries to fetch them by their _id field, this is the waterfall behavior and is able to retrieve most of the data, but if there are documents referencing to any of the ones fetched, that are not circularly referenced, they will not be looked up.

Describe the solution you'd like
A feature gate or a command to proactively look in every collection document field for a reference to the docs fetched in waterfall mode.

Describe alternatives you've considered
Manually looking for these documents, in a particular case hinted by an application that was trying to retrieve a doc that did not have circular reference.