systemd/systemd: fix default disable preset (MR 5588)

This didn't actually seem to do anything, resulting in some weird stuff
being enabled by default even though we did not specify a preset for it
(e.g. see !5556)

Based on my interpretation of the systemd preset manpage, this file
should be parsed last. It says that if a unit name has a preset that
was already configured in some previously parsed preset file, then any
matches after do not apply. This means that the `disable *` should not
disable any previously enabled (in previous .preset files) units. When
the unit name is omitted from the `disable` command, it seems to be a no-op.

Fixes !5207

extra-repos/systemd/systemd/APKBUILD

@@ -5,7 +5,7 @@
 pkgname=systemd
 pkgver=256
 _pkgver="musl-v${pkgver//_/-}"
-pkgrel=3
+pkgrel=4
 pkgdesc="System and service manager"
 url="https://github.com/systemd/systemd"
 arch="all !ppc64le !armhf !s390x" # blocked by pmboostrap not supporting
@@ -218,7 +218,7 @@ package() {
 
 	# ship default policy to leave services disabled
 	mkdir -p "$pkgdir"/usr/lib/systemd/system-preset
-	echo 'disable' > "$pkgdir"/usr/lib/systemd/system-preset/99-default.preset
+	echo 'disable *' >"$pkgdir"/usr/lib/systemd/system-preset/99-default.preset
 
 	install -Dm755 "$srcdir"/systemd-apk-macros.sh -t \
 		"$pkgdir"/usr/lib/systemd