GRUB keymap setting

Changing GRUB keymap has been discussed in this thread:

And you find this from the Arch wiki

https://wiki.archlinux.org/title/GRUB/Tips_and_tricks#Manual_configuration_of_core_image_for_early_boot

What I meant by automation during the installation process is that GRUB keymap would be set automatically to the one that is selected … now it seems to default to US layout, even one selects another one during the installation.