Refactor batch action scheduling for account status updates (#1692)

Updated batch action logic to utilize correct constants and ensure proper scheduling. Added fallback scheduling logic in admin notices to address unscheduled batch actions and improve reliability.

includes/admin/core/class-admin-notices.php

@@ -1,6 +1,8 @@
 <?php
 namespace um\admin\core;
 
+use um\common\actions\Users;
+
 if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
@@ -261,6 +263,13 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 				return;
 			}
 
+			// Alternative method of checking and maybe schedule a batch action if it has not been scheduled previously.
+			// Avoid case when the option with the empty user statuses isn't empty.
+			// We need to recalculate option value and re-schedule the Batch action.
+			if ( ! UM()->maybe_action_scheduler()->has_scheduled_action( Users::BATCH_ACTION ) ) {
+				do_action( Users::SCHEDULE_ACTION );
+			}
+
 			$allowed_html = array(
 				'a'      => array(
 					'href' => array(),