feat(AppScenicAccountController):修复并优化景区列表获取功能- 初始化 list 为 Collections.emptyList()，避免空指针异常

- 增加对 ADMIN 角色的处理，使其能够获取景区列表
- 优化代码结构，提高可读性和维护性

src/main/java/com/ycwl/basic/controller/mobile/manage/AppScenicAccountController.java

@@ -27,6 +27,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
+import static com.ycwl.basic.constant.JwtRoleConstant.ADMIN;
 import static com.ycwl.basic.constant.JwtRoleConstant.MERCHANT;
 
 /**
@@ -65,7 +66,7 @@ public class AppScenicAccountController {
 
     @GetMapping("/myScenicList")
     public ApiResponse<List<ScenicRespVO>> myScenicList() {
-        List<ScenicRespVO> list;
+        List<ScenicRespVO> list = Collections.emptyList();
         if (Strings.CS.equals(BaseContextHandler.getRoleId(), MERCHANT.type)) {
             String userId = BaseContextHandler.getUserId();
             ScenicAccountEntity account = accountService.getScenicAccountById(Long.valueOf(userId));
@@ -75,7 +76,7 @@ public class AppScenicAccountController {
             list = account.getScenicId().stream()
                     .map(id -> scenicService.getDetails(id).getData())
                     .toList();
-        } else {
+        } else if (Strings.CS.equals(BaseContextHandler.getRoleId(), ADMIN.type)) {
             list = adminScenicService.list(new ScenicReqQuery()).getData();
         }
         return ApiResponse.success(list);