Remove “is_order_bump_purchase: true” from PDFs

This is related to this thread, but I though I’ll keep this separate because it’s related to a specific plugin. Right now, using WooCommerce PDF Invoices & Packing Slips plugin to generate PDFs will include is_order_bump_purchase: true in the PDF.

I did some testing, it appears that !is_admin() check to unset this order metadata in the class-upsell-order-bump-offer-for-woocommerce-public.php file is not enough.

I was able to exclude is_order_bump_purchase: true from the packing slip PDF by checking for the plugin’s class like so:

// Hide bump purchase meta only for Customers.
			if ( ! is_admin() || class_exists( 'WooCommerce_PDF_Invoices' ) ) {

				foreach ( $formatted_meta as $key => $meta ) {

					if ( ! empty( $meta->key ) && 'is_order_bump_purchase' === $meta->key ) {

						unset( $formatted_meta[ $key ] );
					}
				}
			}

I don’t know if this is the best solution for this, but it works for now. This will be overwritten on the next update, so I would appreciate a permanent solution.