multi: add new config QuiescenceTimeout

This commit makes removes the `defaultQuiescenceTimeout` and makes it
configurable as different nodes have different network environment. In
addition the default timeout has been increased from 30s to 60s.

server.go

@@ -4529,6 +4529,7 @@ func (s *server) peerConnected(conn net.Conn, connReq *connmgr.ConnReq,
 		AddLocalAlias:          s.aliasMgr.AddLocalAlias,
 		DisallowRouteBlinding:  s.cfg.ProtocolOptions.NoRouteBlinding(),
 		DisallowQuiescence:     s.cfg.ProtocolOptions.NoQuiescence(),
+		QuiescenceTimeout:      s.cfg.Htlcswitch.QuiescenceTimeout,
 		MaxFeeExposure:         thresholdMSats,
 		Quit:                   s.quit,
 		AuxLeafStore:           s.implCfg.AuxLeafStore,