www/phpvirtualbox{,-legacy}: PHP 8.2 support

Was fixed:
1. Deprecated: Creation of dynamic property vboxconnector::$client is deprecated
in /usr/local/www/phpvirtualbox/endpoints/lib/vboxconnector.php on line 175.
2. Deprecated: Creation of dynamic property phpVBoxConfigClass::$enableHDFlushConfig
is deprecated in /usr/local/www/phpvirtualbox/endpoints/lib/config.php on line 1825.
3. Deprecated: Creation of dynamic property phpVBoxConfigClass::$authMaster is deprecated
in /usr/local/www/phpvirtualbox/endpoints/lib/config.php on line 241.
4. Division by zero in endpoints/lib/vboxconnector.php.
Upstream issue: https://github.com/usvn/usvn/issues/82

Approved by:		arrowd (mentor)
Differential Revision:	https://reviews.freebsd.org/D43175
MFH:			2023Q4