[Qt] Disable creating receive addresses when private keys are disabled

src/qt/receivecoinsdialog.cpp

@@ -99,6 +99,9 @@ void ReceiveCoinsDialog::setModel(WalletModel *_model)
         } else {
             ui->useBech32->setCheckState(Qt::Unchecked);
         }
+
+        // eventually disable the main receive button if private key operations are disabled
+        ui->receiveButton->setEnabled(!model->privateKeysDisabled());
     }
 }