The shipped php8.4.conf contains instructions to comment out a section of the
configuration to enable PHP in user directories. This contains a hidden
pitfall because the change is not carried over to a new PHP version. The new
version has a different configuration file so ucf will not warn of local
changes. It seems that if I want to use a separate configuration file to
enable PHP in user directories my only option is to set the flag to "On",
which the instructions warn against doing because it will prevent disabling
PHP through .htaccess.