chore: Translate transifex_input.json in uk

95% of minimum 50% translated source file: 'transifex_input.json'
on 'uk'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/frontend-app-learning/src/i18n/messages/uk.json

@@ -26,7 +26,14 @@
   "learn.coursewareSerch.closeAction": "Close the search form",
   "learn.coursewareSerch.searchModuleTitle": "Search this course",
   "learn.coursewareSerch.searchBarPlaceholderText": "Search",
+  "learn.coursewareSerch.loading": "Searching...",
   "learn.coursewareSerch.searchResultsNone": "No results found.",
+  "learn.coursewareSerch.searchResultsSingular": "1 match found for \"{keyword}\":",
+  "learn.coursewareSerch.searchResultsPlural": "{total} matches found for \"{keyword}\":",
+  "learn.coursewareSerch.searchResultsError": "There was an error on the search process. Please try again in a few minutes. If the problem persists, please contact the support team.",
+  "learn.coursewareSerch.filter:none": "All content",
+  "learn.coursewareSerch.filter:text": "Text",
+  "learn.coursewareSerch.filter:video": "Video",
   "learning.dates.badge.completed": "Завершено",
   "learning.dates.badge.dueNext": "Наступне на черзі",
   "learning.dates.badge.pastDue": "Пройшов термін здачі",