getFacetedMinMaxValues
fun <TData> getFacetedMinMaxValues(): (table: Table<TData>, columnId: String) -> () -> Pair<Double, Double>?
Builds the per-column faceted-min/max-values factory. The returned function is invoked once per (table, columnId) pair and produces a memoised getter for (min, max) as a Pair of Doubles, or null when no numeric values are present.