refactor(game): 移除已弃用的事件常量

- 删除 UpdateHero 和 UpdateFightHero 事件
- 移除 MISSION_UPDATE 事件常量
- 优化游戏事件枚举定义

assets/script/game/common/config/GameEvent.ts

@@ -17,8 +17,6 @@ export enum GameEvent {
     GuideStart = "GuideStart",
     GuideEnd = "GuideEnd",
     GuideComplete = "GuideComplete",
-    UpdateHero = "UpdateHero",
-    UpdateFightHero = "UpdateFightHero",
     CastSkill = "CastSkill",
     CardsClose = "CardsClose",
     CardRefresh = "CardRefresh",
@@ -65,6 +63,5 @@ export enum GameEvent {
     GOLD_UPDATE = "GOLD_UPDATE",
     DIAMOND_UPDATE = "DIAMOND_UPDATE",
     MEAT_UPDATE = "MEAT_UPDATE",
-    MISSION_UPDATE = "MISSION_UPDATE",
     HeroSpeek = "HeroSpeek",
 }