update: 优化 Banner 刷新逻辑

Runtime/Code/SDK/GuruSDK.Ads.cs

@@ -328,6 +328,12 @@ namespace Guru
             ADService.Instance.SetBannerBackgroundColor(color);
         }
         
+        public static void SetBannerAutoRefresh(bool value = true)
+        {
+            if (!CheckAdsReady()) return;
+            ADService.Instance.SetBannerAutoRefresh(value);
+        }
+        
         /// <summary>
         /// 隐藏Banner广告
         /// </summary>