添加用户，取消角色租户判断

tuoheng-service/tuoheng-admin/src/main/java/com/tuoheng/admin/service/user/add/AddUserService.java

         count = roleMapper.selectCount(new LambdaQueryWrapper<Role>()
                 .eq(Role::getId, user.getRoleId())
                 .eq(Role::getMark, 1));
-        if (count <= 0) {
+        if (count < 0) {
             return JsonResult.error(AddUserCodeEnum.ROLE_IS_NOT_EXISTS.getCode(), AddUserCodeEnum.ROLE_IS_NOT_EXISTS.getMsg());
         }
         return JsonResult.success();