Reset item panel page on search result size change (#855)

Co-authored-by: UltraProdigy <187078471+UltraProdigy@users.noreply.github.com>

src/main/java/codechicken/nei/ItemsPanelGrid.java

@@ -70,7 +70,7 @@ public class ItemsPanelGrid extends ItemsGrid<ItemsPanelGrid.ItemsPanelGridSlot,
     }
 
     public ArrayList<ItemStack> newItems;
-    public ArrayList<ItemStack> rawItems;
+    public ArrayList<ItemStack> rawItems = new ArrayList<>();
     protected List<ItemsPanelGridSlot> gridMask;
 
     protected final Map<Integer, Integer> itemToGroup = new HashMap<>();