Both tests produce materialized view definitions whose column names are
table-qualified by pg_get_viewdef() on PG 14/15 (e.g. item_extended.id)
but simplified on PG 16+ (id), causing comparison failures. Add them to
skipListPG14_15 alongside the other view-formatting skips.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>