fix(dealer-orders):修复三级分销商显示逻辑并调整布局- 修正三级分销商信息显示条件，确保仅在有效用户ID时展示

- 调整结算月份文本的布局间距，增加顶部边距

src/dealer/orders/index.tsx

@@ -148,7 +148,7 @@ const DealerOrder: React.FC = () => {
         )}
 
         {/* 三级分销商 */}
-        {(order.thirdUserId && order.thirdUserId == 0) && (
+        {(order.thirdUserId !== undefined && order.thirdUserId > 0) && (
           <Text className="text-sm text-gray-400 block">
             联盟收益补贴：{order.thirdNickname || `用户${order.thirdUserId}`} (¥{order.thirdMoney || '0.00'})
           </Text>
@@ -162,7 +162,7 @@ const DealerOrder: React.FC = () => {
         )}
       </View>
 
-      <View className="flex justify-between items-center">
+      <View className="flex justify-between items-center mt-2">
         <Text className="text-sm text-gray-400">
           结算月份：{order.month}
         </Text>