Astra Premium Sites 4.4.8

- Fix: Rectified the failing import process on multisite due to an issue introduced in v2.6.14
- Fix: Fixed the broken invalid license document links.

- Improvement: Compatibility to WordPress 5.8.
- Improvement: Improved the import process by reducing the body size of the AJAX calls for better performance.
- Improvement: Added support for dark and light support for block patterns with improved sidebar UI.
- Fix: Handle the white label support.

- Improvement: Updated the widget reset logic in which old widget moved to the inactive list.
- Improvement: Quick Links UI improvements.
- Improvement: Premium Templates UI improvements.