Bug Fixes:

• Fix permission check for host system apps in the Camera portal.
• Do not expose the Settings portal if there are no backends available.
• Disable sounds-related notification tests if the project is built without wavparse.

Enhancements:

• Start porting the test suite to Python tests. Once finished, this should break the cyclic dependency between xdg-desktop-portal and libportal.
• Install Python-based tests. This is mostly useful for distributions to run tests as part of their packaging process.