Hi,

base-installer sets do_initrd in /etc/kernel-img.conf. Since at
least 10 years, do_initrd is ignored by the kernel packages, see
this commit:
https://salsa.debian.org/kernel-team/linux-base/-/commit/9977e3b63ba7d7f5bfcd2371505de245cf3e4000

Please remove the code for writing do_initrd into
/etc/kernel-img.conf.

Thanks,
Chris