However, if you're handy with a soldering iron (or 4B pencil!) and not afraid to open up the Aqara Motion Sensor, there is "hack" to put it permanently in "test mode", which means it checks for motion every 3-5 seconds & sends lux reports if motion is detected:
I haven't tried this, but the person who "discovered" it says it doesn't seem to majorly impact battery life. Honestly, I think I should have tried doing this ages ago, because it's a total win-win hardware modification.
Just keep in mind: Even with the hardware modification, a lux report is only sent when motion is detected. But with the higher frequency of motion detection, a "correct" lux reading can be obtained after an automation has turned on lights in a room.