PHP 8.2 Compatibility

[jehiesta]

Just observed some PHP 8.2 Deprecation Notices for the Label Helpers portion of the User Taxonomy Class.

Deprecated: Creation of dynamic property WP_User_Taxonomy::$tax_singular is deprecated
Deprecated: Creation of dynamic property WP_User_Taxonomy::$tax_plural is deprecated
Deprecated: Creation of dynamic property WP_User_Taxonomy::$tax_singular_low is deprecated
Deprecated: Creation of dynamic property WP_User_Taxonomy::$tax_plural_low is deprecated

I've read that these will stop working in PHP 9. In the meantime, these notices can be suppressed by adding #[AllowDynamicProperties] right above the class declaration.