Noticed today (current tumbleweed) that a "zypper remove apache2-mod_php8"
fails, on a system where I already removed "php8" from /etc/sysconfig/apache2
by other means.

error: %preun(apache2-mod_php8-8.1.13-1.1.x86_64) scriptlet failed, exit status
1
error: apache2-mod_php8-8.1.13-1.1.x86_64: erase failed
(1/1) Removing apache2-mod_php8-8.1.13-1.1.x86_64
.........................................................................[error]
Removal of (7)apache2-mod_php8-8.1.13-1.1.x86_64(@System) failed:

The %preun script should have an explicit "exit 0" in the end, or the "a2enmod
-q php8" negative (1) exit value will propagate out, resulting in that failure.

WORKAROUND (so that the package can be uninstalled), is to run "a2enmod php8"
manually once, then the zypper remove. But I feel that is a bit ugly, thus this
bug report.