magento/magento2#18939: [Forwardport] fixed js translation.

Author: p-bystritsky

app/code/Magento/Tax/i18n/en_US.csv

@@ -178,3 +178,4 @@ Rate,Rate
 "Your credit card will be charged for","Your credit card will be charged for"
 "An error occurred while loading tax rates.","An error occurred while loading tax rates."
 "You will be charged for","You will be charged for"
+"Not yet calculated", "Not yet calculated"

app/code/Magento/Tax/view/frontend/web/js/view/checkout/summary/tax.js

@@ -11,8 +11,9 @@ define([
     'ko',
     'Magento_Checkout/js/view/summary/abstract-total',
     'Magento_Checkout/js/model/quote',
-    'Magento_Checkout/js/model/totals'
-], function (ko, Component, quote, totals) {
+    'Magento_Checkout/js/model/totals',
+    'mage/translate'
+], function (ko, Component, quote, totals, $t) {
     'use strict';
 
     var isTaxDisplayedInGrandTotal = window.checkoutConfig.includeTaxInGrandTotal,
@@ -22,7 +23,7 @@ define([
     return Component.extend({
         defaults: {
             isTaxDisplayedInGrandTotal: isTaxDisplayedInGrandTotal,
-            notCalculatedMessage: 'Not yet calculated',
+            notCalculatedMessage: $t('Not yet calculated'),
             template: 'Magento_Tax/checkout/summary/tax'
         },
         totals: quote.getTotals(),