www/phpvirtualbox-72: Fix EFI, Disable Page Fusion

• Fix missing NVRAM file when creating new VM with EFI: https://github.com/phpvirtualbox/phpvirtualbox/issues/364
• Disable Page Fusion feature, does not work in VirtualBox 7.2: https://github.com/phpvirtualbox/phpvirtualbox/issues/363

PR: 290104
MFH: 2025Q4
(cherry picked from commit 02271a4e3c389d217f50dcccf1b91560abe3a439)