Function hover_excluded_property 

pub fn hover_excluded_property(
    query: Query<'_, '_, (&TripleComponent, &mut HoverRequest)>,
    config: Res<'_, ServerConfig>,
)

Hover system: when the cursor sits on an IRI that the user has explicitly allow-listed via allowed_properties, explain that the property is not part of the ontology and is only accepted because the user excluded it from validation — including how to undo that.