test: Add functional tests for sendtxrcncl from inbound

test/functional/test_framework/p2p.py

@@ -62,6 +62,7 @@ from test_framework.messages import (
     msg_sendaddrv2,
     msg_sendcmpct,
     msg_sendheaders,
+    msg_sendtxrcncl,
     msg_tx,
     MSG_TX,
     MSG_TYPE_MASK,
@@ -126,6 +127,7 @@ MESSAGEMAP = {
     b"sendaddrv2": msg_sendaddrv2,
     b"sendcmpct": msg_sendcmpct,
     b"sendheaders": msg_sendheaders,
+    b"sendtxrcncl": msg_sendtxrcncl,
     b"tx": msg_tx,
     b"verack": msg_verack,
     b"version": msg_version,
@@ -421,6 +423,7 @@ class P2PInterface(P2PConnection):
     def on_sendaddrv2(self, message): pass
     def on_sendcmpct(self, message): pass
     def on_sendheaders(self, message): pass
+    def on_sendtxrcncl(self, message): pass
     def on_tx(self, message): pass
     def on_wtxidrelay(self, message): pass