5a57cde110
As discussed in https://github.com/NixOS/nixpkgs/issues/274310#issuecomment-1861842634, the size increase is negligible, and this might be triggered via fstab options or the cmdline too. systemd-growfs is an online operation, so it's taken care of in stage 2. Fixes https://github.com/NixOS/nixpkgs/issues/274310.