Registro de cambios

Fixed: Resolved an issue that could prevent backup files from downloading properly.

Fixed: Corrected a PHP notice related to _load_textdomain_just_in_time being called incorrectly.

Fixed: Fixed a UI issue where optional toggles for "Include in files backup" only appeared after saving settings.

Fixed: Included the missing Must-Use Plugins backup option.

Fixed: Resolved a jQuery error that could occur when saving settings.

Added: Added the ajax_get_site_backups_html AJAX endpoint to load a site's backups dynamically from the dropdown with loading and error handling.

Added: Introduced placeholder element for more consistent empty states across the interface.

Updated: Refined backup management UI elements, including button styles, padded segments, modal close icon, and schedule and plugin table markup for a cleaner experience.