Systemd-networkd overwrites user nftables rules

Description:

Systemd-networkd overwrites user nftables rules.
This is a known upstream issue https://github.com/systemd/systemd/issues/30257
PR is already merged, but milestoned for v256 release.

So I suggest to backport the fix https://github.com/systemd/systemd/commit/58c6e75f263a1562f5550221af1ec1a9b6046143
I tested it and can confirm that it solves the issue.

Additional info:

• package version(s): systemd 255-1