- Fixed is_purchasable() method in LicensedVariableProduct to delegate to
parent WC_Product_Variable instead of checking for price (variable products
don't have direct prices, only their variations do)
- Fixed getProductClass() filter to accept all 4 WooCommerce parameters
and use product_id for reliable variation parent detection
- Fallback to global $post when product_id not available for backwards compat
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
