Collecting a package does NOT set the holder

I collect http://127.0.0.1:8001/api/collect/?purl=pkg:generic/hostapd@2.10&addon_pipelines=collect_symbols_ctags
but in the results the holder is not set:
```JSON
{
"url": "http://127.0.0.1:8001/api/packages/8cf11841-4eff-422f-a5c9-6e1e3c10dbed/",
"uuid": "8cf11841-4eff-422f-a5c9-6e1e3c10dbed",
"filename": "hostapd-2.10.tar.gz",
"package_sets": [],
"package_content": null,
"purl": "pkg:generic/hostapd@2.10",
"type": "generic",
"namespace": "",
"name": "hostapd",
"version": "2.10",
"qualifiers": "",
"subpath": "",
"primary_language": null,
"description": null,
"release_date": "2022-01-16T21:11:00Z",
"parties": [],
"keywords": [],
"homepage_url": "https://w1.fi/releases/",
"download_url": "https://w1.fi/releases/hostapd-2.10.tar.gz",
"bug_tracking_url": null,
"code_view_url": null,
"vcs_url": null,
"repository_homepage_url": null,
"repository_download_url": null,
"api_data_url": null,
"size": null,
"md5": null,
"sha1": null,
"sha256": null,
"sha512": null,
"copyright": "Copyright (c) Jouni Malinen and contributors",
"holder": null,
"declared_license_expression": "bsd-new",
"declared_license_expression_spdx": "BSD-3-Clause",
"license_detections": [],
"other_license_expression": "public-domain AND (gpl-2.0 AND bsd-new) AND (gpl-2.0 OR bsd-new) AND isc AND public-domain-disclaimer AND ((bsd-new OR gpl-2.0) AND bsd-new AND (dco-1.1 AND bsd-new) AND dco-1.1) AND (bsd-new AND dco-1.1) AND dco-1.1",
"other_license_expression_spdx": "LicenseRef-scancode-public-domain AND (GPL-2.0-only AND BSD-3-Clause) AND (GPL-2.0-only OR BSD-3-Clause) AND ISC AND LicenseRef-scancode-public-domain-disclaimer AND ((BSD-3-Clause OR GPL-2.0-only) AND BSD-3-Clause AND (LicenseRef-scancode-dco-1.1 AND BSD-3-Clause) AND LicenseRef-scancode-dco-1.1) AND (BSD-3-Clause AND LicenseRef-scancode-dco-1.1) AND LicenseRef-scancode-dco-1.1",
"other_license_detections": [],
"extracted_license_statement": null,
"notice_text": null,
"source_packages": [],
"extra_data": {},
"package_uid": "pkg:generic/hostapd@2.10?uuid=8cf11841-4eff-422f-a5c9-6e1e3c10dbed",
"datasource_id": null,
"file_references": [],
"dependencies": [],
"resources": "http://127.0.0.1:8001/api/packages/8cf11841-4eff-422f-a5c9-6e1e3c10dbed/resources/",
"history": "http://127.0.0.1:8001/api/packages/8cf11841-4eff-422f-a5c9-6e1e3c10dbed/history/"
}
```