Exports that one sibling of a parallel per-type module family has and the
others do not, on purpose. Keyed by family, then by the export's name with
the type token replaced by <T> (concatenate<T>Data). The meta-check in
geometry-behaviours.test.ts diffs each family's exports and fails on any
asymmetry not listed here — which is how "added to GSplats only" is caught.
Exports that one sibling of a parallel per-type module family has and the others do not, on purpose. Keyed by family, then by the export's name with the type token replaced by
<T>(concatenate<T>Data). The meta-check ingeometry-behaviours.test.tsdiffs each family's exports and fails on any asymmetry not listed here — which is how "added to GSplats only" is caught.