修复一个样板供应器bug，在发配超过Integer.MAX_VALUE的物品切换新格子时，供应器会复制物品

Author: Circulate233

src/main/java/github/kasuminova/mmce/common/util/InfItemFluidHandler.java

@@ -295,7 +295,9 @@ public synchronized void appendItem(@Nonnull final ItemStack stack) {
         }
 
         if (toAppend > 0) {
-            itemStackList.add(stack.copy());
+            var item = stack.copy();
+            item.setCount(toAppend);
+            itemStackList.add(item);
             if (onItemChanged != null) {
                 onItemChanged.accept(itemStackList.size() - 1);
             }