net: expose transport types/session IDs of connections in RPC and logs

Co-authored-by: Dhruv Mehta <856960+dhruv@users.noreply.github.com>

src/test/fuzz/p2p_transport_serialization.cpp

@@ -328,6 +328,9 @@ void SimulationTest(Transport& initiator, Transport& responder, R& rng, FuzzedDa
     // Make sure all expected messages were received.
     assert(expected[0].empty());
     assert(expected[1].empty());
+
+    // Compare session IDs.
+    assert(transports[0]->GetInfo().session_id == transports[1]->GetInfo().session_id);
 }
 
 std::unique_ptr<Transport> MakeV1Transport(NodeId nodeid) noexcept