Stop the bleeding with malicious NodeDB overwrites (#7596)

src/modules/NodeInfoModule.cpp

@@ -14,6 +14,9 @@ bool NodeInfoModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, mes
 {
     auto p = *pptr;
 
+    if (mp.from == nodeDB->getNodeNum()) {
+        return false;
+    }
     if (p.is_licensed != owner.is_licensed) {
         LOG_WARN("Invalid nodeInfo detected, is_licensed mismatch!");
         return true;