FEATURE: Add default site settings to control the defaults of navigation menu preferences (#22485)

Follow-up to b27e12445d

This commit adds 2 new site settings `default_sidebar_link_to_filtered_list` and `default_sidebar_show_count_of_new_items` to control the default values for the navigation menu preferences that were added in the linked commit (`sidebar_link_to_filtered_list` and `sidebar_show_count_of_new_items` respectively).

config/locales/server.en.yml

@@ -2351,6 +2351,8 @@ en:
 
     default_title_count_mode: "Default mode for the page title counter"
     enable_offline_indicator: "Display a message to users when it is detected that they have no network connection"
+    default_sidebar_link_to_filtered_list: "Make navigation menu links link to filtered list by default."
+    default_sidebar_show_count_of_new_items: "Make navigation menu links show count of new items instead of badges by default."
 
     retain_web_hook_events_period_days: "Number of days to retain web hook event records."
     retry_web_hook_events: "Automatically retry failed web hook events for 4 times. Time gaps between the retries are 1, 5, 25 and 125 minutes."

config/site_settings.yml

@@ -2727,6 +2727,9 @@ user_preferences:
   enable_offline_indicator:
     default: false
     client: true
+  default_sidebar_link_to_filtered_list: false
+  default_sidebar_show_count_of_new_items: false
+
 api:
   retain_web_hook_events_period_days:
     default: 30