nixos/power-management: fix deadlock with post-resume.{target,service}
nixos/power-management: fix deadlock with post-resume.{target,service}

Fixes a deadlock where post-resume.target has After=post-resume.service
and post-resume.service runs systemctl try-restart post-resume.target
the systemctl call cannot complete if post-resume.target was already
queued at that time.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs