This is a tracking bug for Change: Enable automatic updates of the bootloader for Bootable Container systems

For more details, see: https://fedoraproject.org/wiki/Changes/AutomaticBootloaderUpdatesBootc

Currently, Bootable Container systems do not perform bootloader updates automatically during OS upgrades. This means the GRUB and shim binaries on disk may become outdated even after a user performs a rpm-ostree upgrade. Instead, the user is responsible for manually updating the bootloader using bootupctl update. This change is to enable automatic bootloader updates in Bootable Container systems and do not need users to update manually.

This feature has been enabled by default at boot for both UEFI and BIOS systems on Fedora 41 Atomic Desktops. For details, see the approved change proposal: FedoraSilverblueBootupd(https://fedoraproject.org/wiki/Changes/FedoraSilverblueBootupd), and enable `bootloader-update.service` in configuration bootupd.yaml (https://pagure.io/workstation-ostree-config/blob/f41/f/bootupd.yaml)

If you encounter a bug related to this Change, please do not comment here. Instead create a new bug and set it to block this bug.

Reproducible: Always