修复 QLAPI 修复环境变量 remarks，esm 依赖查不到

back/api/system.ts

@@ -385,6 +385,7 @@ export default (app: Router) => {
         retries: Joi.number().optional(),
         twoFactorActivated: Joi.boolean().optional(),
         password: Joi.string().optional(),
+        username: Joi.string().optional(),
       }),
     }),
     async (req: Request, res: Response, next: NextFunction) => {