Description of problem：
Debian with encrypted disk can't boot into OS after v2v conversion

Version-Release number of selected component (if applicable):
virt-v2v-2.10.0-4.el10.x86_64
libguestfs-1.58.1-2.el10.x86_64
guestfs-tools-1.54.0-8.el10.x86_64
libvirt-libs-11.10.0-4.el10.x86_64
qemu-img-10.1.0-13.el10.x86_64
nbdkit-1.46.1-3.el10.x86_64
libnbd-1.24.0-1.el10.x86_64

How reproducible:
100%

Steps:
1. Install debian guest and encrypt the disk during os installation on VMware
2. Convert the guest from VMware by virt-v2v

# virt-v2v -ic vpx://non-admin%40vsphere.local@10.73.213.134/data/cluster/10.73.212.36/?no_verify=1  -it vddk -io vddk-libdir=/home/vddk9.0.1 -ip /home/passwd esx8.0-debian13-efi-without-secureboot-and-encrypted-disk --key all:key:redhat123 -v -x |& tee > virt-v2v-convert-esx8.0-debian13-efi-with-encrypted-disk.log

3. Check the guest after v2v conversion, found the guest can't boot into OS

Actual result:
As above description

Expect result:
Fix the bug

Additional info