chore: Adjusting the v2 product module to follow the v1 specs (#6618)

In this PR:
1. I added upsert support for the product
2. I updated the create and update signatures to match the latest interface standards
3. Small changes to make the v1 and v2 APIs compatible (WIP)

packages/core-flows/src/handlers/product/revert-update-products.ts

@@ -27,7 +27,7 @@ export async function revertUpdateProducts({
     product.variants = product.variants.map((v) => ({ id: v.id }))
   })
 
-  return await productModuleService.update(
+  return await productModuleService.upsert(
     data.originalProducts as unknown as UpdateProductDTO[]
   )
 }

packages/core-flows/src/handlers/product/update-products.ts

@@ -19,7 +19,7 @@ export async function updateProducts({
   const productModuleService: ProductTypes.IProductModuleService =
     container.resolve(ModulesDefinition[Modules.PRODUCT].registrationName)
 
-  const products = await productModuleService.update(data.products)
+  const products = await productModuleService.upsert(data.products)
 
   return await productModuleService.list(
     { id: products.map((p) => p.id) },

packages/core-flows/src/product/steps/update-products.ts

@@ -25,9 +25,7 @@ export const updateProductsStep = createStep(
       relations,
     })
 
-    // TODO: We need to update the module's signature
-    // const products = await service.update(data.selector, data.update)
-    const products = []
+    const products = await service.update(data.selector, data.update)
     return new StepResponse(products, prevData)
   },
   async (prevData, { container }) => {
@@ -39,11 +37,10 @@ export const updateProductsStep = createStep(
       ModuleRegistrationName.PRODUCT
     )
 
-    // TODO: We need to update the module's signature
-    // await service.upsert(
-    //   prevData.map((r) => ({
-    //     ...r,
-    //   }))
-    // )
+    await service.upsert(
+      prevData.map((r) => ({
+        ...(r as unknown as ProductTypes.UpdateProductDTO),
+      }))
+    )
   }
 )