net: Send post-verack handshake messages at most once
net: Send post-verack handshake messages at most once

Github-Pull: #20146
Rebased-From: fa1f6f237d02265af616129402fa2b8a3019dda5

monacoinproject/monacoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,monacoinproject/monacoin,peercoin/peercoin,DigitalPandacoin/pandacoin,monacoinproject/monacoin,DigitalPandacoin/pandacoin,peercoin/peercoin,monacoinproject/monacoin,peercoin/peercoin,monacoinproject/monacoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,monacoinproject/monacoin,peercoin/peercoin,peercoin/peercoin,peercoin/peercoin