Compute license audit task results during publish workflow

[AlexVelezLl]

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Description

In #5538 and #5563, a license audit task was introduced. However, as per Richard's comment, we will do this computation at publish time instead. This will make the publish workflow take a little bit longer, but it will save us from having to invoke and track a task and download the channel version.

Technical details

1. Since we will now handle this new computation more generally, we will have a more general focus for the community_library_invalid_licenses and community_library_special_permissions fields, and to prevent scoping these results only for community library processes, we can rename them to be non_distributable_included_licenses and included_special_permissions, respectively.
2. We'll need to remove the task definition and add task tests.
3. We'll need to remove the audit_licenses action on the Channel Viewset.
4. We'll need to remove the addition of the published_data to the Channel Viewset values tuple, and the generation of the change event updating this field.
5. We'll need to migrate the logic of the audit_channel_licenses function to be called in the publish_channel workflow, and use the Channel snapshot that is already loaded on the publish module, rather than downloading the content database again.
6. In the frontend, we won't need to invoke the async task, so we'll need to remove the async task loading strings, and we'll need to get the task results directly from the published_data object.