Update rest_lights.cpp
Update rest_lights.cpp

Support setting `state.bri` for `lumi.curtain.hagl04`(Xiaomi Aqara curtain motor B1) by writing _Present Value_ in the _Analogue Output_ cluster.  See #1654.

dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin