emulators/virtualbox-ose*-71: Update 7.1.14 => 7.1.16

Changelog:
https://www.virtualbox.org/wiki/Changelog-7.1#v16

emulators/virtualbox-ose{,-nox11}-71:
Remove the OGG, VORBIS, and VPX options - without libogg and libvorbis
in the system, the ports attempts to use the bundled versions, but
without libvpx, the build fails. Even when using libvpx, building the
bundled libvorbis library also fails.
These 3 libraries are not heavy dependencies, so we simply make them
mandatory even for emulators/virtualbox-ose-nox11-71.

PR: 292801
Security: CVE-2026-21955
Security: CVE-2026-21956
Security: CVE-2026-21987
Security: CVE-2026-21988
Security: CVE-2026-21990
Security: CVE-2026-21989
Security: CVE-2026-21957
Security: CVE-2026-21983
Security: CVE-2026-21984
Security: CVE-2026-21982
Security: CVE-2026-21986
Security: CVE-2026-21963
Security: CVE-2026-21985
Security: CVE-2026-21981
MFH: 2026Q1
(cherry picked from commit 6a38da38e994a483e3b5fe339a85846cc390d7a3)