Bugfix: GUI: Send/PSBT: Correct virtual size unit and make translatable

src/qt/sendcoinsdialog.cpp

@@ -355,7 +355,8 @@ bool SendCoinsDialog::PrepareSendText(QString& question_string, QString& informa
         question_string.append("</b>");
 
         // append transaction size
-        question_string.append(" (" + QString::number((double)m_current_transaction->getTransactionSize() / 1000) + " kB): ");
+        //: When reviewing a newly created PSBT (via Send flow), the transaction fee is shown, with "virtual size" of the transaction displayed for context
+        question_string.append(" (" + tr("%1 kvB", "PSBT transaction creation").arg((double)m_current_transaction->getTransactionSize() / 1000, 0, 'g', 3) + "): ");
 
         // append transaction fee value
         question_string.append("<span style='color:#aa0000; font-weight:bold;'>");