Core/Loot: Check bank for unique loot items when determining loot roll eligibility (#29373)

# Conflicts:
#	src/server/game/Groups/Group.cpp

src/server/game/Groups/Group.cpp

@@ -1030,7 +1030,7 @@ bool CanRollOnItem(const LootItem& item, Player const* player)
     if (!proto)
         return false;
 
-    uint32 itemCount = player->GetItemCount(item.itemid);
+    uint32 itemCount = player->GetItemCount(item.itemid, true);
     if (proto->GetMaxCount() > 0 && itemCount >= proto->GetMaxCount())
         return false;