supportsHeardOnCurrentLora

Whether the node reports NodeInfo.heard_on_current_lora - whether it has heard each node over RF on the LoRa configuration it is using now. Gated to UNRELEASED until the firmware side ships. Older firmware never sends the field, and a proto3 bool defaults to false, so an ungated read marks every node as unheard.

Deliberately outside forceEnableAll: every other capability being wrong in a debug build shows a UI the firmware ignores, but this one being wrong persists false into the node DB and offers real nodes for removal.