nixos/wireless: enable PMF by default

Alternative solution to PR #152443.
This fixes authentication failures to WPA3 networks (issue #151729)
by enabling protected management frames.
Note: old client without 802.11w support will still fail.

nixos/modules/services/networking/wpa_supplicant.nix

@@ -18,6 +18,7 @@ let
         "ctrl_interface_group=${cfg.userControlled.group}"
         "update_config=1"
       ])
+    ++ [ "pmf=1" ]
     ++ optional cfg.scanOnLowSignal ''bgscan="simple:30:-70:3600"''
     ++ optional (cfg.extraConfig != "") cfg.extraConfig);