WooCommerce Product Bundles 8.3.5

* Fix - PHP warning when all variations of a bundled Variable product are out of stock.
* Fix - Prevent fatal error 'Call to a member function is_priced_individually() on boolean' in some more edge cases.
* Fix - Prevent infinite loop when calculating inherited bundled item Membership discounts.
* Fix - Prevent inherited bundled item Membership discounts from being applied twice in the cart.

* Fix - Declared support for WooCommerce 4.0.
* Tweak - Check product type before modifying REST API responses

* Important - Bundled product Add-On prices are no longer preserved when Priced Individually is disabled. To restore this behavior, use the 'props' price filtering method, or (i) enable Priced Individually, (ii) enter a 100% Discount, and (iii) disable the 'Advanced Settings > Price Visibility > Product Details' option.
* Important - Bundled product discounts are now applied over sale prices by default.
* Feature - Add support for importing/exporting Bundle-Sells using the WC core Importer/Exporter.
* Fix - Support 'Grid' layout in REST API put/post requests.
* Fix - All Products for WooCommerce Subscriptions does not calculate regular subscription plan prices correctly when Product Add-Ons exist at Bundle or bundled item level (requires APFS 3.1+).
* Fix - Product Add-On precentage costs not calculated correctly in the cart.
* Fix - Added compatibility with Name Your Price 3.0.
* Fix - Prevent Quantity Max from being saved with zero value.
* Fix - Replace deprecated 'WC_Cache_Helper::incr_cache_prefix'.