Description of problem：
win11 guest with vtpm and bitlocker enabled will power off automatically if the user does not enter the key in 1 minute after v2v conversion

Version-Release number of selected component (if applicable):
virt-v2v-2.8.1-5.el10.x86_64
libguestfs-1.56.0-1.el10.1.x86_64
guestfs-tools-1.54.0-2.el10.x86_64
libvirt-libs-11.5.0-1.el10.x86_64
qemu-img-10.0.0-7.el10.x86_64
nbdkit-1.44.1-2.el10.x86_64
libnbd-1.22.2-1.el10.x86_64

How reproducible:
100%

Steps:
1. Convert a win11 guest with vtpm and bitlocker enabled from VMware by virt-v2v

#virt-v2v -ic vpx://non-admin%40vsphere.local@10.73.212.129/Folder/Datacenter/Cluster/10.73.225.34/?no_verify=1  -it vddk -io vddk-libdir=/home/vddk8.0.3 -io vddk-thumbprint=CB:9F:B1:9D:33:49:6C:60:AD:3C:A5:16:77:91:5F:CD:1B:24:B1:43 -ip /home/passwd esx8.0-win11-efi-tpm-with-thick-provision --key all:key:245058-628452-035684-655050-559064-719092-139810-713339 -on esx8.0-win11-efi-tpm-with-thick-provision-virt-v2v-2.8.1-5 -v -x |& tee > virt-v2v-converts-win11-efi-with-vtpm-and-bitlocker-enabled.log 

 2.Power on the guest after v2v conversion, guest will pop up a dialog waiting for user to enter the bitlocker key, but the guest will power off automatically if the user does not enter the key in 1 minute

 
Actual result:
As above description

Expect result:
Fix the bug

Additional info