message: Add information to "Confirm fee bump" window
  Check if "Coin Control features" are enabled to display warning before broadcasting replacement transaction
  Workaround to fix issue: bitcoin/bitcoin#20795
diff: @@ -507,6 +507,13 @@ bool WalletModel::saveReceiveRequest(const std::string &sAddress, const int64_t
  bool WalletModel::isWalletEnabled()
  {
  return !gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET);
  +
  + // Display warning in the "Confirm fee bump" window if the "Coin Control Features" option is enabled
  + if (getOptionsModel()->getCoinControlFeatures()) {
  + questionString.append("<br><br>");
  + questionString.append(tr("Warning: This may pay the additional fee by reducing change outputs or adding inputs, when necessary. It may add a new change output if one does not already exist. These changes may potentially leak privacy."));
  + }
  +
  }
  bool WalletModel::privateKeysDisabled() const
  