systemd/systemd: lower systemd-resolved provider_priority

Currently we do not package the configurations needed to use systemd-resolved
as a replacement for openresolv. Without this patch current systems that have
wireguard-tools installed will automatically pull systemd-resolved.

See https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/80058/diffs

extra-repos/systemd/systemd/APKBUILD

@@ -6,7 +6,7 @@ pkgname=systemd
 # currently tracking git MR
 pkgver=256.11
 _pkgver="musl-v${pkgver//_/-}-split-usr"
-pkgrel=0
+pkgrel=1
 pkgdesc="System and service manager"
 url="https://github.com/systemd/systemd"
 arch="all !ppc64le !s390x" # blocked by pmboostrap not supporting
@@ -328,6 +328,9 @@ resolved() {
 	install="$subpkgname.post-install $subpkgname.pre-deinstall"
 	replaces="resolvconf"
 	provides="resolvconf"
+	# To not auto-install on existing systemd-based systems
+	# until we are ready to use it.
+	provider_priority=0
 
 	amove etc/systemd/resolved.conf
 	amove usr/sbin/resolvconf