refactor(character): 重构角色动作与动画系统

- 移除自动回退动作生成逻辑，改为严格检查动作定义
- 增加动作资源缺失时的详细错误报告机制
- 统一输入事件处理接口，优化角色对象生命周期管理
- 改进动画标签管理，移除隐式回退逻辑
- 增强状态机对无效动作的处理能力

Game/include/character/states/CharacterStateBase.h

@@ -57,9 +57,7 @@ protected:
   void ChangeState(CharacterStateMachine& machine,
                    CharacterStateContext& context,
                    CharacterStateId nextState) const;
-  void PlayActionById(CharacterObject& owner,
-                      const std::string& actionId,
-                      const std::string& fallbackTag = "rest") const;
+  void PlayActionById(CharacterObject& owner, const std::string& actionId) const;
   void InvokeHook(CharacterStateMachine& machine,
                   CharacterObject& owner,
                   const CharacterActionDefinition* action,