WooCommerce Product Reviews Pro 1.19.2

* Fix: Address "Creation of dynamic property" deprecation warnings in PHP 8.2+.
* Fix: Address "Passing null to parameter of type string" deprecation warnings in PHP 8.1+.

Fix - Address error when using Italian translations with PHP 8.0 or newer

* Fix - Add screen reader text in empty anchor links to improve accessibility and avoid issues with SEO software
* Fix - Escape value in `render_reviews_list_table()` hidden input field
* Misc - Add compatibility for WooCommerce High Performance Order Storage (HPOS)

Misc - Require PHP 7.4 and WordPress 5.6