MAAS virsh compose update machine type to q35 and boot to UEFI

Features
1

Hi MAAS dev team,

Please update virsh compose machine typo from “pc-i440fx” to “q35”
as well update legacy boot to UEFI

example

now

  <os>
    <type arch="x86_64" machine="pc-i440fx-jammy">hvm</type>
    <bootmenu enable="yes"/>
  </os>

future

 <os firmware="efi">
    <type arch="x86_64" machine="pc-q35-6.2">hvm</type>
    <boot dev="network"/>
    <boot dev="hd"/>
  </os>