fix(dashboard): reservation inventory details (#9535)

**What**
- display data in inventory details section of the reservation details page

---

FIXES CC-595

packages/admin/dashboard/src/routes/reservations/reservation-detail/reservation-detail.tsx

@@ -7,6 +7,7 @@ import { useReservationItem } from "../../../hooks/api/reservations"
 import { InventoryItemGeneralSection } from "../../inventory/inventory-detail/components/inventory-item-general-section"
 import { ReservationGeneralSection } from "./components/reservation-general-section"
 import { reservationItemLoader } from "./loader"
+import { useInventoryItem } from "../../../hooks/api"
 
 export const ReservationDetail = () => {
   const { id } = useParams()
@@ -23,6 +24,13 @@ export const ReservationDetail = () => {
     }
   )
 
+  // TEMP: fetch directly since the fields are not populated with reservation call
+  const { inventory_item } = useInventoryItem(
+    reservation?.inventory_item?.id!,
+    undefined,
+    { enabled: !!reservation?.inventory_item?.id! }
+  )
+
   const { getWidgets } = useDashboardExtension()
 
   if (isLoading || !reservation) {
@@ -56,9 +64,9 @@ export const ReservationDetail = () => {
         <ReservationGeneralSection reservation={reservation} />
       </TwoColumnPage.Main>
       <TwoColumnPage.Sidebar>
-        <InventoryItemGeneralSection
+        {inventory_item && (
-          inventoryItem={reservation.inventory_item}
+          <InventoryItemGeneralSection inventoryItem={inventory_item} />
-        />
+        )}
       </TwoColumnPage.Sidebar>
     </TwoColumnPage>
   )