Astra Premium Sites 4.4.8

- Improvement: Demo data is stored Network Wide for Multisite instance.
- Improvement: Users can opt-out from Elementor Theme Kit if needed while importing the site.
- Fix: Double slash for REST endpoint removed.
- Fix: Changed user permissions for a few actions.

- Fix: Handled duplicate data being imported due to Imagick image editor.

- Improvement: Improved the file permissions check functionality.