emulators/virtualbox-ose{,-nox11,-kmod,-additions,-additions-nox11}: update to 6.1.46

Changelog: https://www.virtualbox.org/wiki/Changelog-6.1#v46
Also fixed PORTREVISION in master/slave ports.

PR: 272572
Approved by: arrowd (mentor)
Differential Revision: https://reviews.freebsd.org/D41110
MFH: 2023Q3