Add support for "View As" which allows admins access to Addon Packages when set to "true"

addon-packages-view-as-admins.php

<?php
/**
 * Give access to admins to Addon Packages when "View As" is enabled.
 *
 * Add this code to your site by following this guide - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmproap_support_admin_view_as( $levels, $user_id, $post_id ){
	if ( current_user_can( 'manage_options' ) ) {
		$view_as = get_user_meta( $user_id, 'pmpro_admin_membership_access', true );

		if ( $view_as === 'yes' ) {
			$all_levels = pmpro_getAllLevels( true );
			$levels = wp_list_pluck( $all_levels, 'id' );
		}
		
	}
	return $levels;

}
add_filter( 'pmproap_all_access_levels', 'my_pmproap_support_admin_view_as', 10, 3 );