Bring default eth port led behavior back

I just found, that the LEDs located on the ethernet ports are always off now (22.03.3, xiaomi mi mini)
But I'm definitely sure they were triggered by rx/tx packets on the port several releases ago (21.02.3 IIRC)
I have no led configuration in /etc/config/system.
They can be added here, but that's not what I want. I want to trigger leds by packets on port, not by packets on interface.

(You may want to move the thread to the "Feature Requests" section.)