Merge bitcoin/bitcoin#22834: net: respect -onlynet= when making outbound connections

0eea83a85e scripted-diff: rename `proxyType` to `Proxy` (Vasil Dimov)
e53a8505db net: respect -onlynet= when making outbound connections (Vasil Dimov)

Pull request description:

  Do not make outbound connections to hosts which belong to a network
  which is restricted by `-onlynet`.

  This applies to hosts that are automatically chosen to connect to and to
  anchors.

  This does not apply to hosts given to `-connect`, `-addnode`,
  `addnode` RPC, dns seeds, `-seednode`.

  Fixes https://github.com/bitcoin/bitcoin/issues/13378
  Fixes https://github.com/bitcoin/bitcoin/issues/22647
  Supersedes https://github.com/bitcoin/bitcoin/pull/22651

ACKs for top commit:
  naumenkogs:
    utACK 0eea83a85e
  prayank23:
    reACK https://github.com/bitcoin/bitcoin/pull/22834/commits/0eea83a85ec6b215d44facc2b16ee1b035275a6b
  jonatack:
    ACK 0eea83a85e code review, rebased to master, debug built, and did some manual testing with various config options on signet

Tree-SHA512: 37d68b449dd6d2715843fc84d85f48fa2508be40ea105a7f4a28443b318d0b6bd39e3b2ca2a6186f2913836adf08d91038a8b142928e1282130f39ac81aa741b

src/qt/clientmodel.cpp

@@ -329,7 +329,7 @@ void ClientModel::unsubscribeFromCoreSignals()
 
 bool ClientModel::getProxyInfo(std::string& ip_port) const
 {
-    proxyType ipv4, ipv6;
+    Proxy ipv4, ipv6;
     if (m_node.getProxy((Network) 1, ipv4) && m_node.getProxy((Network) 2, ipv6)) {
       ip_port = ipv4.proxy.ToStringIPPort();
       return true;

src/qt/optionsdialog.cpp

@@ -395,7 +395,7 @@ void OptionsDialog::updateProxyValidationState()
 
 void OptionsDialog::updateDefaultProxyNets()
 {
-    proxyType proxy;
+    Proxy proxy;
     std::string strProxy;
     QString strDefaultProxyGUI;
 
@@ -425,7 +425,7 @@ QValidator::State ProxyAddressValidator::validate(QString &input, int &pos) cons
     Q_UNUSED(pos);
     // Validate the proxy
     CService serv(LookupNumeric(input.toStdString(), DEFAULT_GUI_PROXY_PORT));
-    proxyType addrProxy = proxyType(serv, true);
+    Proxy addrProxy = Proxy(serv, true);
     if (addrProxy.IsValid())
         return QValidator::Acceptable;