Update import status on .../import/bulk_imports/history page

Currently, while running a BulkImport/Gitlab Migration import, the .../import/bulk_imports/history page automatically updates when new groups or projects start importing, but does not automatically update the import status. It would be good to update this automatically if possible.

How to set up and validate locally

1. In the header bar, click on + icon (Create new...) > New group.
2. Select Import group.
3. Fill in the GDK URL as GitLab source instance URL and a Person Access Token.
4. Once on the Import groups page, click on History link on the upper right corner.
5. You should be on the Import history page. For example, http://127.0.0.1:3000/import/bulk_imports/history.