Custom License results in malformed license and acquireLicensePage elements

Choosing a custom license in the plugin causes the url to fail.

Google requires an unadorned URL in the ‘license’ property. However, the plugin sets this to “license”: “https://custom”, and uses the ‘acquireLicensePage’ property for a URL that also includes potentially unwanted url parameters. See below for an example:

<script type="application/ld+json">
[{"@context": "https://schema.org/",
"@type": "ImageObject",
"contentUrl": "https://eatingasturias.com/wp-content/uploads/2022/02/My-Asturias-New-Beginnings-curro--300x300.jpg",
"license": "https://custom",
"acquireLicensePage": "https://eatingasturias.com/impressum/image-copyright-licensing/?license-policy=1&id=14194&src=https%3A%2F%2Featingasturias.com%2Fwp-content%2Fuploads%2F2022%2F02%2FMy-Asturias-New-Beginnings-curro--300x300.jpg"},
{"@context": "https://schema.org/",
"@type": "ImageObject",
"contentUrl": "https://eatingasturias.com/wp-content/uploads/2022/02/My-Asturias-New-Beginnings-chicken--300x300.jpg",
"license": "https://custom",
"acquireLicensePage": "https://eatingasturias.com/impressum/image-copyright-licensing/?license-policy=1&id=14194&src=https%3A%2F%2Featingasturias.com%2Fwp-content%2Fuploads%2F2022%2F02%2FMy-Asturias-New-Beginnings-chicken--300x300.jpg"
}]</script>

The obvious solution is to insert the url chosen in the plugin into the ‘license’ property, and provide a separate field for including another url in the ‘acquireLicensePage’ property as the site owner requires.