Be more judicious about responding to want_response in existing meshes (#9014)

* Be more judicious about sending want_response in existing meshes and responding to nodes we already heard from

* Turns out we don't actually use this

src/modules/NodeInfoModule.h

@@ -1,5 +1,6 @@
 #pragma once
 #include "ProtobufModule.h"
+#include <map>
 
 /**
  * NodeInfo module for sending/receiving NodeInfos into the mesh
@@ -43,6 +44,10 @@ class NodeInfoModule : public ProtobufModule<meshtastic_User>, private concurren
   private:
     uint32_t lastSentToMesh = 0; // Last time we sent our NodeInfo to the mesh
     bool shorterTimeout = false;
+    bool suppressReplyForCurrentRequest = false;
+    std::map<NodeNum, uint32_t> lastNodeInfoSeen;
+
+    void pruneLastNodeInfoCache();
 };
 
 extern NodeInfoModule *nodeInfoModule;