WooCommerce Waitlist 2.5.0

* Fix: modified 'wcwl_default_option_enable_waitlist' to properly allow setting default waitlist enable option
* Fix: removed autoload from options where unnecessary
* Fix: some admin notices showing for new users that shouldn't be
* Added: various code improvements to adhere to PHPStan tests
* Removed: redundant legacy frontend product class

* Fix: WPML - switching language on waitlist account tab was not updating product names properly
* Fix: Removing waitlist data from product meta in Cocart plugin

* Fix: sortable admin column query not working for all values, updated to be simpler and handle edge cases
* Fix: added update function for waitlist counts when using the update counts tool