Set grub2_uefi_boot_path to /boot/grub for debian-like

[israel-villar]

Description:

• In product_properties/10-grub.yml, the debian-like override sets grub2_boot_path=/boot/grub but leaves grub2_uefi_boot_path at the default /boot/grub2.
• Add grub2_uefi_boot_path: "/boot/grub" to the debian-like block so Debian 11/12/13 use the correct path. Ubuntu (also debian-like) already sets it for > 18.04, and its own block still overrides to /boot/efi/EFI/ubuntu for <= 18.04.

Rationale:

• /boot/grub2 is a RHEL path and does not exist on Debian. On UEFI Debian the full GRUB configuration lives in /boot/grub/grub.cfg; the file under /boot/efi/EFI/debian/ is only a stub that configfiles it.
• Because of the wrong path, grub2_uefi_password (and any other rule keyed on grub2_uefi_boot_path) checks a non-existent file and always fails on Debian, even when set superusers and password_pbkdf2 are correctly present in /boot/grub/grub.cfg.

Review Hints:

• One-line change.
• ./build_product debian11 debian12 debian13 ubuntu2404 --datastream and ctest pass.
• Verified on a Debian 13 UEFI host: grub2_uefi_password goes from fail to pass once the OVAL points at /boot/grub/grub.cfg.

[openshift-ci]

Hi @israel-villar. Thanks for your PR.

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