Updated ProcessStaleOffer and FlagExpiredOffersAfterDate to use offer object extension method to check if its a trader offer

Libraries/SPTarkov.Server.Core/Services/RagfairOfferService.cs

@@ -194,8 +194,8 @@ public class RagfairOfferService(
             return;
         }
 
-        // Skip trader offers, managed by RagfairServer.Update() + should remain on flea as 'expired'
-        if (ragfairServerHelper.IsTrader(staleOffer.User.Id))
+        // Skip trader offers, managed by RagfairServer.Update() + should remain on flea as 'expired' until trader refresh occurs
+        if (staleOffer.IsTraderOffer())
         {
             return;
         }

Libraries/SPTarkov.Server.Core/Utils/RagfairOfferHolder.cs

@@ -401,7 +401,7 @@ public class RagfairOfferHolder(
         {
             foreach (var offer in GetOffers())
             {
-                if (_expiredOfferIds.Contains(offer.Id) || ragfairServerHelper.IsTrader(offer.User.Id))
+                if (_expiredOfferIds.Contains(offer.Id) || offer.IsTraderOffer())
                 {
                     // Already flagged or trader offer (handled separately), skip
                     continue;