FIX: Update sidebar to be navigation menu (#22101)

Communities can use sidebar or header dropdown, therefore navigation menu is a better name settings in 2 places:

- Old user sidebar preferences;
- Site setting about default tags and categories.

db/migrate/20230614011312_rename_default_sidebar_categories_setting.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class RenameDefaultSidebarCategoriesSetting < ActiveRecord::Migration[7.0]
+  def change
+    execute "UPDATE site_settings SET name = 'default_navigation_menu_categories' WHERE name = 'default_sidebar_categories'"
+  end
+end

db/migrate/20230614011419_rename_default_sidebar_tags_setting.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class RenameDefaultSidebarTagsSetting < ActiveRecord::Migration[7.0]
+  def change
+    execute "UPDATE site_settings SET name = 'default_navigation_menu_tags' WHERE name = 'default_sidebar_tags'"
+  end
+end