Improve BUs in the "Lists" section

[MGaetan89]

Pull request

Description

In the "Lists" section (in both demo apps), the BUs are now sorted alphabetically, unsupported BUs are removed (ie. we no longer display "501 Not implemented"), and we show "No content" if we don't receive anything from the IL.

Changes made

• Filter out unsupported BUs in some sections
• Sort BUs alphabetically
• Add missing previews
• Add empty state

Checklist

• Your branch has been rebased onto the main branch.
• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).
• All pull request status checks pass.