AlmaLinux deploy fails as redhat family grub error

MaaS 3.3 package on Ubuntu 22.04 issue.

curtin error created when attempting to install Almalinux to bare metal. curtin identifies Alma as redhat family and looks for grub files in wrong location. Since this is being installed as a 'custom' OS, it should not be redefining where the grub files are. Logs below. This is impacting production in AMD labs

finish: cmd-install/stage-curthooks/builtin/cmd-curthooks/install-grub: FAIL: installing grub to target devices
        finish: cmd-install/stage-curthooks/builtin/cmd-curthooks/configuring-bootloader: FAIL: configuring target system bootloader
        finish: cmd-install/stage-curthooks/builtin/cmd-curthooks: FAIL: curtin command curthooks
        Traceback (most recent call last):
          File "/curtin/curtin/commands/main.py", line 202, in main
            ret = args.func(args)
          File "/curtin/curtin/commands/curthooks.py", line 1886, in curthooks
            builtin_curthooks(cfg, target, state)
          File "/curtin/curtin/commands/curthooks.py", line 1851, in builtin_curthooks
            setup_grub(cfg, target, osfamily=osfamily,
          File "/curtin/curtin/commands/curthooks.py", line 804, in setup_grub
            install_grub(instdevs, target, uefi=uefi_bootable, grubcfg=grubcfg)
          File "/curtin/curtin/commands/install_grub.py", line 401, in install_grub
            in_chroot.subp(cmd, env=env, capture=True)
          File "/curtin/curtin/util.py", line 787, in subp
            return subp(*args, **kwargs)
          File "/curtin/curtin/util.py", line 275, in subp
            return _subp(*args, **kwargs)
          File "/curtin/curtin/util.py", line 139, in _subp
            raise ProcessExecutionError(stdout=out, stderr=err,
        curtin.util.ProcessExecutionError: Unexpected error while running command.
        Command: ['unshare', '--fork', '--pid', '--', 'chroot', '/tmp/tmpnhzqid2b/target', 'grub2-mkconfig', '-o', '/boot/efi/EFI/redhat/grub.cfg']
        Exit code: 1
        Reason: -
        Stdout: ''
        Stderr: /usr/sbin/grub2-mkconfig: line 274: /boot/efi/EFI/redhat/grub.cfg.new: No such file or directory

        Unexpected error while running command.
        Command: ['unshare', '--fork', '--pid', '--', 'chroot', '/tmp/tmpnhzqid2b/target', 'grub2-mkconfig', '-o', '/boot/efi/EFI/redhat/grub.cfg']
        Exit code: 1
        Reason: -
        Stdout: ''
        Stderr: /usr/sbin/grub2-mkconfig: line 274: /boot/efi/EFI/redhat/grub.cfg.new: No such file or directory

Stderr: ''