Feature: Disable readonly languages when publishing and unpublishing a document

[madsrasmussen]

Description

This PR aligns the language permission functionality in the publishing and unpublishing dialogs with the rest. We now disable the language options that a user does not have access to.

Just so you know, both dialogs can be opened from within the document workspace and the tree.

Publish dialog

Unpublish dialog

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)