fix(admin-ui, medusa): Allocations and fulfillments for variants without inventory items (#3660)

* fix fulfillment for order lines without inventory items

* fix summary card on order for variants without inventory items

* add changeset

* minor fixes

* remove variants without inventory items from allocate modal

* naming

* Update .changeset/kind-rings-wave.md

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

* remove line item indicator

* cleanup

---------

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/medusa/src/services/product-variant-inventory.ts

@@ -514,11 +514,15 @@ class ProductVariantInventoryService extends TransactionBaseService {
       return
     }
 
-    const itemsToValidate = items.filter((item) => item.variant_id)
+    const itemsToValidate = items.filter((item) => !!item.variant_id)
 
     for (const item of itemsToValidate) {
       const pvInventoryItems = await this.listByVariant(item.variant_id!)
 
+      if (!pvInventoryItems.length) {
+        continue
+      }
+
       const [inventoryLevels, inventoryLevelCount] =
         await this.inventoryService_.listInventoryLevels({
           inventory_item_id: pvInventoryItems.map((i) => i.inventory_item_id),