Phantom node fix perhaps (#11271)

* trying to fix phantom nodes

* fix comment spam

* oops - missed one

test/test_fuzz_packets/test_main.cpp

@@ -616,6 +616,7 @@ void test_E7_nodedb_update_fuzz(void)
             mp.id = rngNext();
             mp.rx_snr = (float)((int)rngRange(60) - 30);
             mp.rx_rssi = (int32_t)rngRange(256) - 128;
+            mp.has_rx_rssi = (rngRange(2) != 0); // exercise both the presence and absence paths
             mp.hop_start = (uint8_t)rngRange(8);
             mp.hop_limit = (uint8_t)rngRange(8);
             mp.which_payload_variant = meshtastic_MeshPacket_decoded_tag;
@@ -666,6 +667,7 @@ static void fuzzRxHeader(meshtastic_MeshPacket &mp, meshtastic_PortNum portnum)
     mp.channel = (uint8_t)rngRange(channels.getNumChannels());
     mp.rx_snr = (float)((int)rngRange(40) - 20);
     mp.rx_rssi = -(int)rngRange(130);
+    mp.has_rx_rssi = (rngRange(2) != 0); // exercise both the presence and absence paths
     mp.hop_start = (uint8_t)rngRange(8); // 0..7, wire-bounded
     mp.hop_limit = (uint8_t)rngRange(8);
     mp.want_ack = (rngRange(2) == 0);

test/test_meshpacket_serializer/test_helpers.h

@@ -40,6 +40,7 @@ static meshtastic_MeshPacket create_test_packet(meshtastic_PortNum port, const u
     packet.rx_snr = 10.5f;
     packet.hop_start = 3;
     packet.rx_rssi = -85;
+    packet.has_rx_rssi = true; // rx_rssi has explicit presence; mark this synthetic reading as measured
     packet.delayed = meshtastic_MeshPacket_Delayed_NO_DELAY;
 
     // Set decoded variant