The Backport of https://github.com/vyos/vyos-1x/pull/4858 not work.
Warning not rise.
Version: VyOS 1.4-stable-202511292107 , vyos-1.5-stream-202512030410
Config:
```
set system login radius server 192.168.0.2 key 'test-vyos'
set system login radius server 192.168.0.2 port '1812'
set system login radius server 192.168.0.2 timeout '5'
set system login radius source-address '192.168.0.1'
```