refactor(tysdk): 优化账户信息处理逻辑

- 移除重复的账户信息初始化代码，统一处理流程
- 简化 JSON 数据解析方式，直接转换类型避免方法调用
- 重构登录数据处理逻辑，移除不必要的条件判断
- 优化账户信息更新机制，直接更新 token 字段
- 删除过时的账户信息验证和创建逻辑

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

@@ -323,18 +323,6 @@ namespace tysdk
             {
                 var result = await task;
                 if (result.code == 0)
-                {
-                    if (_accountInfo == null)
-                        _accountInfo = AccountInfo.GetSavedAccoutInfo();
-
-                    if (_accountInfo != null)
-                    {
-                        _accountInfo.channel = accoutType;
-                        _accountInfo.AddLinkedAccount(accoutType);
-                        _accountInfo.Save();
-                    }
-                }
-                else if (result.code == -1 && _accountInfo.userId == result.userId)
                 {
                     _accountInfo.channel = accoutType;
                     _accountInfo.AddLinkedAccount(accoutType);
@@ -354,8 +342,8 @@ namespace tysdk
             JObject data = JObject.Parse(message);
             var result = new LinkResult()
             {
-                code = data["code"].Value<int>(),
-                userId = data["userId"].Value<int>(),
+                code = (int)data["code"],
+                userId = (int)data["userId"]
             };
 
             if (data.ContainsKey("bindInfo"))
@@ -366,23 +354,7 @@ namespace tysdk
             if (result.code == 0 && data.ContainsKey("loginData"))
             {
                 var loginData = data["loginData"];
-
-                var userId = (int)loginData["userId"];
-                var token = (string)loginData["token"];
-                var jwtToken = (string)loginData["jwttoken"];
-
-                var savedInfo = AccountInfo.GetSavedAccoutInfo();
-                if (savedInfo == null || savedInfo.userId != userId)
-                {
-                    _accountInfo = new AccountInfo()
-                    {
-                        userId = (int)loginData["userId"],
-                        userName = (string)loginData["userName"],
-                        avatar = (string)loginData["purl"],
-                        token = (string)loginData["token"],
-                        jwtToken = (string)loginData["jwttoken"],
-                    };
-                }
+                _accountInfo.token = (string)loginData["token"];
             }
             TYSDKCallbackManager.Instance.TryTriggerCallback(result);
         }