Enhance SUPER_ADMIN middleware and permission utility for improved access control

- Updated the `requireSuperAdmin` middleware to allow users with `userType` as 'SUPER_ADMIN' to access management functionalities, even if their `companyCode` is not '*'.
- Modified the `isSuperAdmin` utility function to recognize users as SUPER_ADMIN based solely on their `userType`, simplifying the access validation logic.
- These changes ensure that SUPER_ADMIN users maintain their management capabilities across company transitions, enhancing the flexibility and security of the application.

backend-node/src/utils/permissionUtils.ts

@@ -21,7 +21,8 @@ export enum PermissionLevel {
  */
 export function isSuperAdmin(user?: PersonBean | null): boolean {
   if (!user) return false;
-  return user.companyCode === "*" && user.userType === "SUPER_ADMIN";
+  // 회사전환 후에도 userType이 SUPER_ADMIN이면 최고관리자로 인정
+  return user.userType === "SUPER_ADMIN";
 }
 
 /**