Xiaomi Aqara Mijia driver Online-healthstatus inconsistent

@kkossev @danabw
Question for the last to devs to mod this driver.
I find that the Health Status does not always reflect an offline device.
Just mention this as I looked at my filament AMS humidity and it said -100 degrees C; thought that was a bit cold for the 'ol Bambu. :wink:
Event logs showed it hadn't reported an event since 09/06 and "Last Activity At" was 09/09. Battery was 100%/Online/3.03 volts.
I changed the battery as it was indeed not as reported and all is well.
Somewhere the 12 hour(?) comparison of the previous state is not setting the changing the Current State values reflect the lack of response to a heath query?