WP Wham Product Open Pricing: change per-product metabox's "enabled" setting default to "yes"

functions.php

add_filter( 'wpwham_product_open_pricing_metabox_options', 'wpwham_20210930_change_metabox_defaults' );
function wpwham_20210930_change_metabox_defaults( $options ) {
	foreach ( $options as &$option ) {
		if ( $option['name'] === 'alg_wc_product_open_pricing_enabled' ) {
			$option['default'] = 'yes';
			break;
		}
	}
	return $options;
}