Properly track obtained persistent items

This fixes tracking of randomized persistent items, like soul totems and
lifeblood hearts.

Fixes #1

APMapMod/Map/PinsCustom.cs

@@ -181,14 +181,20 @@ public void UpdatePinLocationState(PinDef pd)
             //     return;
             // }
 
+            bool hasUnobtainedItems = false;
             // Remove obtained rando items from list
             if (pd.randoItems != null && pd.randoItems.Any())
             {
                 List<ItemDef> newRandoItems = new();
 
                 foreach (ItemDef item in pd.randoItems)
                 {
-                    if (!item.item.IsObtained() || item.item.IsPersistent())
+                    if (!item.item.WasEverObtained())
+                    {
+                        hasUnobtainedItems = true;
+                    }
+
+                    if (!item.item.WasEverObtained() || item.item.IsPersistent())
                     {
                         newRandoItems.Add(item);
                     }
@@ -221,6 +227,10 @@ public void UpdatePinLocationState(PinDef pd)
             {
                 pd.pinLocationState = PinLocationState.Cleared;
             }
+            else if (!hasUnobtainedItems)
+            {
+                pd.pinLocationState = PinLocationState.ClearedPersistent;
+            }
         }
 
         // Called every time when any relevant setting is changed, or when the Map is opened