Update de_web_plugin.cpp
Update de_web_plugin.cpp

Don't expose cluster in `uniqueid` for ZGPSwitch devices (in line with Hue bridge).

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