fix(date formatting): Show study date as a fallback for an empty series date and show 'No Study Date' as a back up for both (#3483)

extensions/measurement-tracking/src/panels/PanelStudyBrowserTracking/PanelStudyBrowserTracking.tsx

@@ -1,4 +1,5 @@
 import React, { useState, useEffect } from 'react';
+import { useTranslation } from 'react-i18next';
 import PropTypes from 'prop-types';
 import { utils } from '@ohif/core';
 import {
@@ -31,6 +32,8 @@ function PanelStudyBrowserTracking({
     uiNotificationService,
   } = servicesManager.services;
 
+  const { t } = useTranslation('Common');
+
   // Normally you nest the components so the tree isn't so deep, and the data
   // doesn't have to have such an intense shape. This works well enough for now.
   // Tabs --> Studies --> DisplaySets --> Thumbnails
@@ -134,7 +137,7 @@ function PanelStudyBrowserTracking({
       const actuallyMappedStudies = mappedStudies.map(qidoStudy => {
         return {
           studyInstanceUid: qidoStudy.StudyInstanceUID,
-          date: formatDate(qidoStudy.StudyDate),
+          date: formatDate(qidoStudy.StudyDate) || t('NoStudyDate'),
           description: qidoStudy.StudyDescription,
           modalities: qidoStudy.ModalitiesInStudy,
           numInstances: qidoStudy.NumInstances,