feat: Flexion 先验签后消费支付流程 + playerId 绑定

实现 Flexion 渠道支付验签重构：支付成功后不立即消费，将 purchaseJson/signature/purchaseToken
回调至 Unity，由服务端 SHA1withRSA 验签并校验 developerPayload.playerId 后再调用 consume。
同步更新 SDKManager 接口、UnityBridgeFunc 桥接、TYSdkModel 字段及 ExtraPluginCfgs。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

sdk-intergration/Packages/tysdk/Runtime/TYSdkFacade_Pay.cs

@@ -30,6 +30,7 @@ namespace tysdk
 
             if (purchaseInfo == null)
                 purchaseInfo = new JObject();
+            // purchaseInfo["playerId"] = _accountInfo.strUserId;
 
             string extraInfo = purchaseInfo.ToString(Newtonsoft.Json.Formatting.None);
             extraInfo = Convert.ToBase64String(Encoding.UTF8.GetBytes(extraInfo));
@@ -56,18 +57,16 @@ namespace tysdk
 #elif UNITY_ANDROID
 
             var pType = ChannelConfig.PayType;
-
-            var task = TYSDKCallbackManager.Instance.RegisterCallback<PaymentInfo>(TimeSpan.FromSeconds(30));
-
+            var task = TYSDKCallbackManager.Instance.RegisterCallback<PaymentInfo>(TimeSpan.FromSeconds(90));
             try
             {
                 UnityBridgeFunc.UnityKnowNew(prodId, prodPrice, prodName, count.ToString(), orderId, extraInfo, pType);
-
                 var result = await task;
                 result.count = count;
                 result.orderId = orderId;
                 result.productId = prodId;
                 result.price = prodPrice;
+                result.Check(orderId, prodId);
                 return result;
             }
             catch (Exception e)
@@ -112,6 +111,9 @@ namespace tysdk
             var result = new PaymentInfo();
             result.code = jresult["code"].ToString();
             result.msg = jresult["errStr"].ToString();
+            result.purchaseJson = jresult["purchaseJson"]?.ToString();
+            result.signature = jresult["signature"]?.ToString();
+            result.purchaseToken = jresult["purchaseToken"]?.ToString();
             if (result.code == "-1")
             {
                 if (!_payFirstNegativeHandled)