refactor(hero): 移除多余的日志输出并简化代码逻辑

本次提交清理了多个英雄相关组件中的调试日志，同时简化了条件判断写法：
1.  将多行if判断简化为单行return形式
2.  删除HeroViewComp中护盾特效相关的冗余日志和节点查找逻辑
3.  优化absorbShield和add_shield等方法的代码可读性

assets/script/game/hero/HeroAttrsComp.ts

@@ -154,14 +154,10 @@ export class HeroAttrsComp extends ecs.Comp {
     add_shield(value: number) {
         const oldShield = this.shield;
         const addValue = Math.max(0, Math.floor(value));
-        if (addValue <= 0) {
-            mLogger.log(this.debugMode, 'HeroAttrs', `add_shield: addValue=${addValue} <= 0, skip`);
-            return;
-        }
+        if (addValue <= 0) return;
         this.shield += addValue;
         if (this.shield < 0) this.shield = 0;
         this.dirty_shield = true;  // 标记护盾需要更新
-        mLogger.log(this.debugMode, 'HeroAttrs', `add_shield: ${this.hero_name}, old=${Math.floor(oldShield)}, add=${addValue}, new=${Math.floor(this.shield)}, dirty_shield=true`);
     }
     add_hp_max(value: number) {
         this.hp_max += value