Allow repeater discovery even if repeater mode is disabled on the requesting repeater.

examples/simple_repeater/MyMesh.cpp

@@ -767,8 +767,6 @@ void MyMesh::onControlDataRecv(mesh::Packet* packet) {
 }
 
 void MyMesh::sendNodeDiscoverReq() {
-  if (_prefs.disable_fwd) return;
-
   uint8_t data[10];
   data[0] = CTL_TYPE_NODE_DISCOVER_REQ; // prefix_only=0
   data[1] = (1 << ADV_TYPE_REPEATER);