Support fully direct request/responses (#9455)

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/modules/RoutingModule.cpp

@@ -67,6 +67,8 @@ uint8_t RoutingModule::getHopLimitForResponse(const meshtastic_MeshPacket &mp)
 #if !(EVENTMODE)             // This falls through to the default.
             return hopsUsed; // If the request used more hops than the limit, use the same amount of hops
 #endif
+        } else if (mp.hop_start == 0) {
+            return 0; // The requesting node wanted 0 hops, so the response also uses a direct/local path.
         } else if ((uint8_t)(hopsUsed + 2) < config.lora.hop_limit) {
             return hopsUsed + 2; // Use only the amount of hops needed with some margin as the way back may be different
         }