Impossible package selection for Xiaomi AX3600 AIoT router

Generate local signing keys...
WARNING: can't open config file: /builder/shared-workdir/build/staging_dir/host/etc/ssl/openssl.cnf
WARNING: can't open config file: /builder/shared-workdir/build/staging_dir/host/etc/ssl/openssl.cnf
read EC key
writing EC key
WARNING: opening /builder/packages/packages.adb: No such file or directory
Package list missing or not up-to-date, generating it.

Building package index...
ERROR: unable to select packages:
  nftables (no such package):
    required by: world[nftables]
  ppp (no such package):
    required by: world[ppp]
  ppp-mod-pppoe (no such package):
    required by: world[ppp-mod-pppoe]
  nftables-json (no such package):
    required by: firewall4-2024.12.18~18fc0ead-r1[nftables-json]
  libnftnl11 (no such package):
    required by: xtables-nft-1.8.10-r1[libnftnl11]
  tc (no such package):
    required by: sqm-scripts-1.6.0-r1[tc]
                 qos-scripts-1.3.1-r33[tc]
make[2]: *** [Makefile:226: package_install] Error 16
make[1]: *** [Makefile:167: _call_manifest] Error 2
make: *** [Makefile:344: manifest] Error 2

Start with the reported Xiaomi AX3600 build log and reproduce the package-selection failure. Investigate why nftables, ppp, ppp-mod-pppoe, nftables-json, libnftnl11, and tc are absent from the generated package index. Done means the image build can select these required packages without the reported errors.