/**
 * Compatibility layer for third-party block markup that is present in migrated
 * content but whose originating plugin is intentionally not installed.
 *
 * Every previously excluded plugin (Contact Form 7, Elfsight FAQ, Carousel
 * Slider Block) is now installed again, so there is nothing left to hide here.
 * The file is kept as the single place to add neutralisation rules again if a
 * plugin is ever dropped.
 */