Added check for stack count below 1 and resets to 1 when handling single items being passed into unstackOfferItems()

(cherry picked from commit 78f6fad21b)

project/src/services/RagfairOfferService.ts

@@ -310,6 +310,12 @@ export class RagfairOfferService
         // Items within stack tolerance, return existing data - no changes needed
         if (totalItemCount <= itemMaxStackSize)
         {
+            // Edge case - Ensure items stack count isnt < 1
+            if (items[0]?.upd?.StackObjectsCount < 1)
+            {
+                items[0].upd.StackObjectsCount = 1;
+            }
+
             return items;
         }