add polkit autostart to mango

gtk/.config/gtk-3.0/settings.ini

@@ -1,5 +1,5 @@
 [Settings]
-gtk-theme-name=adw-gtk3-dark
+gtk-theme-name=Adwaita-dark
 gtk-icon-theme-name=Papirus-Dark
 gtk-font-name=Adwaita Sans 11
 gtk-cursor-theme-name=Adwaita
@@ -14,4 +14,4 @@ gtk-xft-antialias=1
 gtk-xft-hinting=1
 gtk-xft-hintstyle=hintslight
 gtk-xft-rgba=none
-gtk-application-prefer-dark-theme=1
+gtk-application-prefer-dark-theme=1