Fix AbstractGui#getAllInventories missing inventories

Author: NichtStudioCode

invui-core/src/main/java/xyz/xenondevs/invui/gui/AbstractGui.java

@@ -466,7 +466,7 @@ protected int putIntoFirstInventory(UpdateReason updateReason, ItemStack itemSta
      * @return A map of all {@link Inventory Inventories} and their slots that are visible.
      */
     public Map<Inventory, Set<Integer>> getAllInventorySlots(Inventory... ignored) {
-        TreeMap<Inventory, Set<Integer>> slots = new TreeMap<>(Comparator.comparingInt(Inventory::getGuiPriority).reversed());
+        HashMap<Inventory, Set<Integer>> slots = new HashMap<>();
         Set<Inventory> ignoredSet = Arrays.stream(ignored).collect(Collectors.toSet());
 
         for (SlotElement element : slotElements) {
@@ -484,7 +484,9 @@ public Map<Inventory, Set<Integer>> getAllInventorySlots(Inventory... ignored) {
             }
         }
 
-        return slots;
+        return slots.entrySet().stream()
+            .sorted(Comparator.<Map.Entry<Inventory, Set<Integer>>>comparingInt(entry -> entry.getKey().getGuiPriority()).reversed())
+            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (a, b) -> a, LinkedHashMap::new));
     }
 
     /**

invui-core/src/main/java/xyz/xenondevs/invui/inventory/ObscuredInventory.java

@@ -127,4 +127,14 @@ public void setPreUpdateHandler(@Nullable Consumer<@NotNull ItemPreUpdateEvent>
         throw new UnsupportedOperationException("Update handlers need to be set in the backing inventory");
     }
 
+    @Override
+    public int getGuiPriority() {
+        return inventory.getGuiPriority();
+    }
+    
+    @Override
+    public void setGuiPriority(int guiPriority) {
+        throw new UnsupportedOperationException("Gui priority needs to be set in the backing inventory");
+    }
+    
 }