Set ConfigPending flag for Heiman Watersensor
Set ConfigPending flag for Heiman Watersensor

This fix the problem that Heiman water sensor could not be paired.
It will still join as "unreachable" until it is activated once.
TODO: remove the unreachable state after pairing

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