Add preference to hide following/followers lists (#7532)

* Add preference to hide following/followers lists

- Public pages
- ActivityPub collections (does not return pages but does give total)
- REST API (unless it's your own) (does not federate)

Fix #6901

* Add preference

* Add delegation

* Fix issue

* Fix issue

app/lib/user_settings_decorator.rb

@@ -28,6 +28,7 @@ class UserSettingsDecorator
     user.settings['system_font_ui']          = system_font_ui_preference if change?('setting_system_font_ui')
     user.settings['noindex']                 = noindex_preference if change?('setting_noindex')
     user.settings['theme']                   = theme_preference if change?('setting_theme')
+    user.settings['hide_network']            = hide_network_preference if change?('setting_hide_network')
   end
 
   def merged_notification_emails
@@ -78,6 +79,10 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_noindex'
   end
 
+  def hide_network_preference
+    boolean_cast_setting 'setting_hide_network'
+  end
+
   def theme_preference
     settings['setting_theme']
   end