Too much data included in author detected in ansible-core/PKG-INFO

### Description

For [ansible-core 2.19.13](https://pypi.org/project/ansible-core/2.19.13/#files) ScanCode detects an author from an `Author` tag in the `PKG-INFO` file, but then also includes a lot of text in the same `author` detection that shouldn't be there.

### How To Reproduce

1. Download [PKG-INFO](https://github.com/user-attachments/files/31991986/PKG-INFO.txt) (renamed to `.txt` due to GitHub file upload constraints, but name doesn't matter for scan anyway).
2. `scancode -c --json-pp copyrights.json ./PKG-INFO.txt`
3. `cat copyrights.json`

```
{
"headers": [
{
"tool_name": "scancode-toolkit",
"tool_version": "32.5.0",
"options": {
"input": [
"./PKG-INFO.txt"
],
"--copyright": true,
"--json-pp": "copyrights.json",
"--only-findings": false
},
"notice": "Generated with ScanCode and provided on an \"AS IS\" BASIS, WITHOUT WARRANTIES\nOR CONDITIONS OF ANY KIND, either express or implied. No content created from\nScanCode should be considered or used as legal advice. Consult an Attorney\nfor any legal advice.\nScanCode is a free software code scanning tool from nexB Inc. and others.\nVisit https://github.com/nexB/scancode-toolkit/ for support and download.",
"start_timestamp": "2026-09-09T054205.088312",
"end_timestamp": "2026-09-09T054205.706679",
"output_format_version": "4.1.0",
"duration": 0.6183807849884033,
"message": null,
"errors": [],
"warnings": [],
"extra_data": {
"system_environment": {
"operating_system": "linux",
"cpu_architecture": "64",
"python_version": "3.14.4 (main, Jun 18 2026, 14:25:02) [GCC 15.2.0]"
},
"spdx_license_list_version": "3.27",
"files_count": 1
}
}
],
"files": [
{
"path": "PKG-INFO.txt",
"type": "file",
"copyrights": [],
"holders": [],
"authors": [
{
"author": "Ansible Project Project-URL Homepage, https://ansible.com/ Project-URL Source Code, https://github.com/ansible/ansible/ Project-URL Bug Tracker, https://github.com/ansible/ansible/issues/ Project-URL CI Azure Pipelines, https://dev.azure.com/ansible/ansible/ Project-URL Documentation, https://docs.ansible.com/ansible-core",
"start_line": 5,
"end_line": 10
},
{
"author": "Michael DeHaan (https://github.com/mpdehaan)",
"start_line": 134,
"end_line": 134
}
],
"scan_errors": []
}
]
}
```

It then finds the following as an `author`:

```
Ansible Project Project-URL Homepage, https://ansible.com/ Project-URL Source Code, https://github.com/ansible/ansible/ Project-URL Bug Tracker, https://github.com/ansible/ansible/issues/ Project-URL CI Azure Pipelines, https://dev.azure.com/ansible/ansible/ Project-URL Documentation, https://docs.ansible.com/ansible-core
```

I would expect only `Ansible Project` to be included in the `author` field, based on the declaration `Author: Ansible Project`. All the other text should be omitted.

### System configuration

> For bug reports, it really helps us to know:

* What OS are you running on? (Windows/MacOS/Linux)
* Linux
* What version of scancode-toolkit was used to generate the scan file?
* 32.5.0
* What installation method was used to install/run scancode? (pip/source download/other)
* `pip`