Alto Upload: IIIF URL is wrong
We should depend on the FileIdentifier node when present, to build IIIF images. This node is already parsed.
Patch https://gitlab.teklia.com/arkindex/cli/-/blob/e4e0fc698d6582e5e4f170347724cb70329b8065/arkindex_cli/commands/upload/alto/init.py#L689
image_id = create_iiif_image(client, iiif_base_url + (root.file_identifier or iiif_path))