Pi-hole's resolution of local domains is unrelated to Implement _dns.resolver.arpa as a special domain or add BLOCK_SVCB as a configuration option.
Please upload a debug log and post just the token URL that is generated after the log is uploaded by running the following command from the Pi-hole host terminal:
sudo pihole -d
or if you run your Pi-hole as a Docker container:
docker exec -it <pihole-container-name-or-id> pihole -d
where you substitute <pihole-container-name-or-id> as required.