[SSSD-users]Re: filter_users using user id

[François Rigault]

> One just would need to add dummy user with that UID.

note this does not work when using DynamicUser (https://systemd.io/UIDS-GIDS/#special-systemd-uid-ranges)

```
$ systemd-run -p DynamicUser=yes --pipe -- ps -o uid,cmd
Running as unit: run-p20670-i20970.service
  UID CMD
64283 /bin/ps -o uid,cmd

$ grep 64283 /var/log/sssd/sssd_DOM.log
(2025-03-22 11:58:38): [be[DOM]] [dp_get_account_info_send] (0x0200): Got request for [0x1][BE_REQ_USER][idnumber=64283]
(2025-03-22 11:58:39): [be[DOM]] [dp_get_account_info_send] (0x0200): Got request for [0x2][BE_REQ_GROUP][idnumber=64283]
```