chore: Translate transifex_input.json in ar

74% of minimum 30% reviewed source file: 'transifex_input.json'
on 'ar'.

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

translations/frontend-app-course-authoring/src/i18n/messages/ar.json

@@ -412,7 +412,7 @@
   "course-authoring.course-outline.card.menu.duplicate": "مكررة",
   "course-authoring.course-outline.card.menu.moveup": "حرك لأعلى",
   "course-authoring.course-outline.card.menu.movedown": "حرك لأسفل",
-  "course-authoring.course-outline.card.menu.delete": "انسخ إلى الحافظة",
+  "course-authoring.course-outline.card.menu.delete": "احذف",
   "course-authoring.course-outline.card.menu.proctoring-settings": "إعدادات المراقبة",
   "course-authoring.course-outline.card.menu.proctoring-settings-tooltip": "إعدادات المراقبة",
   "course-authoring.course-outline.card.badge.discussionEnabled": "تم تفعيل المناقشات",