https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1142400 is a duplicate of this same issue, but does describe the root cause and a workaround.
- Bug#1142060: php8.4-fpm: The /run/php/php-fpm.sock alte... David Caldwell
- Bug#1142060: php8.4-fpm: The /run/php/php-fpm.sock... llamaonaskateboard

