[MM-59367] export: enable exporting thread followers for CRT (#27623)

server/i18n/en.json

@@ -6222,6 +6222,10 @@
     "id": "app.post.save.existing.app_error",
     "translation": "You cannot update an existing Post."
   },
+  {
+    "id": "app.post.save.thread_membership.app_error",
+    "translation": "Unable to save thread membership for post."
+  },
   {
     "id": "app.post.search.app_error",
     "translation": "Error searching posts"
@@ -6718,6 +6722,10 @@
     "id": "app.terms_of_service.get.no_rows.app_error",
     "translation": "No terms of service found."
   },
+  {
+    "id": "app.thread.get_threadmembers_for_export.app_error",
+    "translation": "Unable to get thread members for export."
+  },
   {
     "id": "app.thread.mark_all_as_read_by_channels.app_error",
     "translation": "Unable to mark all threads as read by channel"
@@ -9658,6 +9666,14 @@
     "id": "model.team_member.is_valid.user_id.app_error",
     "translation": "Invalid user id."
   },
+  {
+    "id": "model.thread.is_valid.post_id.app_error",
+    "translation": "Invalid post ID."
+  },
+  {
+    "id": "model.thread.is_valid.user_id.app_error",
+    "translation": "Invalid user ID."
+  },
   {
     "id": "model.token.is_valid.expiry",
     "translation": "Invalid token expiry"