Fix marketplace promotions action scheduler (#46630)

* Defensive coding for when `as_has_scheduled_action` Action Scheduler function is not defined.

* Changelog.

plugins/woocommerce/changelog/fix-marketplace-promotions-action-scheduler

@@ -0,0 +1,5 @@
+Significance: patch
+Type: fix
+Comment: Defensive coding for when Action Scheduler function as_has_scheduled_action is not defined.
+
+

plugins/woocommerce/includes/admin/class-wc-admin-marketplace-promotions.php

@@ -38,19 +38,17 @@ class WC_Admin_Marketplace_Promotions {
 	 * @return void
 	 */
 	public static function init() {
-		register_deactivation_hook( WC_PLUGIN_FILE, array( __CLASS__, 'clear_scheduled_event' ) );
-
 		/**
 		 * Filter to suppress the requests for and showing of marketplace promotions.
 		 *
 		 * @since 8.8
 		 */
 		if ( apply_filters( 'woocommerce_marketplace_suppress_promotions', false ) ) {
-			add_action( 'init', array( __CLASS__, 'clear_scheduled_event' ), 13 );
-
 			return;
 		}
 
+		register_deactivation_hook( WC_PLUGIN_FILE, array( __CLASS__, 'clear_scheduled_event' ) );
+
 		// Add the callback for our scheduled action.
 		if ( ! has_action( self::SCHEDULED_ACTION_HOOK, array( __CLASS__, 'fetch_marketplace_promotions' ) ) ) {
 			add_action( self::SCHEDULED_ACTION_HOOK, array( __CLASS__, 'fetch_marketplace_promotions' ) );
@@ -77,7 +75,11 @@ public static function init() {
 	 */
 	public static function schedule_promotion_fetch() {
 		// Schedule the action twice a day using Action Scheduler.
-		if ( false === as_has_scheduled_action( self::SCHEDULED_ACTION_HOOK ) ) {
+		if (
+			function_exists( 'as_has_scheduled_action' )
+			&& function_exists( 'as_schedule_recurring_action' )
+			&& false === as_has_scheduled_action( self::SCHEDULED_ACTION_HOOK )
+		) {
 			as_schedule_recurring_action( time(), self::SCHEDULED_ACTION_INTERVAL, self::SCHEDULED_ACTION_HOOK );
 		}
 	}
@@ -295,7 +297,9 @@ private static function append_bubble( string $menu_item_text, string $bubble_te
 	 * @return void
 	 */
 	public static function clear_scheduled_event() {
-		as_unschedule_all_actions( self::SCHEDULED_ACTION_HOOK );
+		if ( function_exists( 'as_unschedule_all_actions' ) ) {
+			as_unschedule_all_actions( self::SCHEDULED_ACTION_HOOK );
+		}
 	}
 }