Runs fx_roundtrip_check() across every row of an ontology CSV, using a
value column (default examples) as a stand-in for stable values, and
returns which types need an explicit import rule to survive a read/write
round trip.
Runs fx_roundtrip_check() across every row of an ontology CSV, using a
value column (default examples) as a stand-in for stable values, and
returns which types need an explicit import rule to survive a read/write
round trip.