WooCommerce Product Bundles 8.3.5

* Fix - Important: Security improvements.
* Fix - Resolved a compatibility issue with Gravity Forms.
* Fix - Fixed an issue that prevented Bundles from being edited in Subscriptions in admin context.
* New - Tested up to WooCommerce 8.8.

* New - Introduced 'wp wc pb sync-stock' WP CLI command to handle parent stock syncing.
* New - Introduced filter 'woocommerce_pb_sync_stock_via_cli' to handle syncing solely through WP CLI.
* New - Introduced filter 'woocommerce_pb_sync_parent_stock_use_action_scheduler' to enable syncing through the Action Scheduler.
* New - Introduced filters 'woocommerce_pb_sync_parent_stock_as_batch_size' and 'woocommerce_pb_sync_parent_stock_as_interval' to fine-tune batch sizes and intervals when syncing stock.
* New - Introduced new onboarding tutorial.
* Tweak - Improved compatibility with Min/Max Quantities and Bundles that contain variations.

* Tweak - Improved product data controller to prevent potential fatal errors from integrations.