0312 优化字符串拼接函数

hch

2025-12-09 f448a4aff7c479db081175c9206913cc6dedf553

 Main/System/OSActivity/OSRankHeroCallAwardCell.cs

@@ -16,7 +16,7 @@
        {
            rankImg.SetActive(true);
            rankText.SetActive(false);
            rankImg.SetSprite(StringUtility.Contact("Rank", index + 1));
            rankImg.SetSprite($"Rank{index + 1}");
        }
        else
        {