refactor(configs): 更新 ActivityWelfareConf.json 配置文件

- 移除了 ID 为 2 的配置项 "在线豪礼"
- 保留了其他配置项的结构和内容
- 对配置文件进行了格式化，增加了缩进和换行，提高可读性

configs/ActivityWelfareConf.json

@@ -1 +1,6 @@
-{"1":{"Id":1,"actId":10005,"name":"每日签到"},"2":{"Id":2,"actId":10408,"name":"在线豪礼","view":"app.OnlineRewardsView"},"3":{"Id":3,"actId":10149,"name":"装备首爆","view":"app.OpenServerSportsView"},"4":{"Id":4,"actId":10148,"name":"BOSS首杀","view":"app.OpenServerSportsView"},"5":{"Id":5,"actId":10011,"name":"激活码"}}
+{
+  "1": { "Id": 1, "actId": 10005, "name": "每日签到" },
+  "3": { "Id": 3, "actId": 10149, "name": "装备首爆", "view": "app.OpenServerSportsView" },
+  "4": { "Id": 4, "actId": 10148, "name": "BOSS首杀", "view": "app.OpenServerSportsView" },
+  "5": { "Id": 5, "actId": 10011, "name": "激活码" }
+}