fix(战斗): 修正近战英雄的攻击逻辑和技能配置

- 将兽人召唤师、祭司、图腾师的类型从远程改为近战，以匹配其实际战斗行为
- 修复空挥技能的错误动画名称引用
- 重构SCastSystem的目标选择逻辑，移除冗余的combat_target处理
- 简化敌人查找逻辑，直接根据攻击范围寻找最近目标

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

@@ -186,7 +186,7 @@ export interface SkillConfig {
 export const SkillSet: Record<number, SkillConfig> = {
     // ========== 基础攻击 ========== 6001-6099
     6001: {
-        uuid:6001,name:"空挥",sp_name:"atk_s2",icon:"1026",TGroup:TGroup.Enemy,TType:TType.Frontline,readyAnm:"",endAnm:"",act:"atk",DTType:DTType.single,
+        uuid:6001,name:"空挥",sp_name:"atk_s1",icon:"1026",TGroup:TGroup.Enemy,TType:TType.Frontline,readyAnm:"",endAnm:"",act:"atk",DTType:DTType.single,
         ap:100,hit_count:1,hitcd:0.2,speed:720,with:0,
         ready:0,EAnm:0,DAnm:9001,RType:RType.fixed,EType:EType.animationEnd,
         buffs:[],debuffs:[],info:"对前方目标造成100%攻击的伤害",