refactor(config): 统一技能范围类型命名与逻辑

1. 移除废弃的aoe_grid范围类型，统一使用range类型
2. 更新文档、配置表和代码中的相关描述与枚举定义
3. 清理技能目标选择逻辑中针对aoe_grid的冗余代码

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

@@ -18,7 +18,6 @@ export enum TGroup {
 export enum DTType {
     single = 0,
     range = 1,
-    aoe_grid = 2, // 3*3 网格范围攻击，以中路第2、3列为目标                              
 }
 
 export enum SkillKind {
@@ -293,7 +292,7 @@ export const SkillSet: Record<number, SkillConfig> = {
     },
     6104: {
         uuid: 6104, name: "开山斧", sp_name: "range2", icon: "Stat_Tripleshot", TGroup: TGroup.Enemy, readyAnm: "blues", endAnm: "", act: "max0",
-        DTType: DTType.aoe_grid, stun: 0, ap: 300, hit_count: 6, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.remote,
+        DTType: DTType.range, stun: 0, ap: 300, hit_count: 6, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.remote,
         RType: RType.fixed, EType: EType.animationEnd, info: "召唤巨斧劈向前方敌人",//可以附加击晕增强
     },
     // 刺客/射手群体攻击大招