[MM-59519] preserve DM/GM unread/read state over export and import (#27707)

server/i18n/en.json

@@ -5174,6 +5174,14 @@
     "id": "app.import.import_direct_channel.create_group_channel.error",
     "translation": "Failed to create group channel"
   },
+  {
+    "id": "app.import.import_direct_channel.get_channel_members.error",
+    "translation": "Failed to get channel members for direct channel"
+  },
+  {
+    "id": "app.import.import_direct_channel.no_members.error",
+    "translation": "There are no members for the direct channel"
+  },
   {
     "id": "app.import.import_direct_channel.update_header_failed.error",
     "translation": "Failed to update direct channel header"