default sku boolean to product skus table

src/Model/Table/ProductsTable.php

@@ -97,6 +97,13 @@ class ProductsTable extends Table
             'dependent' => true,
         ]);
 
+        $this->hasOne('DefaultProductSkus', [
+            'foreignKey' => 'product_id',
+            'conditions' => ['PrimaryProductSkus.default_sku' => true],
+            'className' => 'CakeProducts.ProductSkus',
+            'dependent' => true,
+        ]);
+
         $this->getSchema()->setColumnType('product_type_id', EnumType::from(ProductProductTypeId::class));
 
         $this->addBehavior('Muffin/Trash.Trash');