FEATURE: Add chat and sidebar toggles to the setup wizard (#19347)

* FEATURE: Add chat and sidebar toggles to the setup wizard

- Fix css alighnment
- Add Enable Chat Toggle
- Add Enable Sidebar Toggle

* Check for the chat plugin

* Account for new sidebar step

* update chat and sidebar description

* UI: add checkmark as a visual indicator that it is enabled

* use new navigation_memu site setting for enabling the sidebar

* fix tests

* Add tests

* Update lib/wizard/step_updater.rb

Use HEADER_DROPDOWN instead of LEGACY

Co-authored-by: Alan Guo Xiang Tan <gxtan1990@gmail.com>

* Fix spec. Use HEADER_DROPDOWN instead of LEGACY

Co-authored-by: Ella <ella.estigoy@gmail.com>
Co-authored-by: Alan Guo Xiang Tan <gxtan1990@gmail.com>

lib/wizard/builder.rb

@@ -70,10 +70,28 @@ class Wizard
           value: SiteSetting.must_approve_users
         )
 
+        if defined?(::Chat)
+          step.add_field(
+            id: 'chat_enabled',
+            type: 'checkbox',
+            icon: 'comment',
+            value: SiteSetting.chat_enabled
+          )
+        end
+
+        step.add_field(
+          id: 'enable_sidebar',
+          type: 'checkbox',
+          icon: 'bars',
+          value: SiteSetting.navigation_menu == NavigationMenuSiteSetting::SIDEBAR
+        )
+
         step.on_update do |updater|
           updater.update_setting(:login_required, updater.fields[:login_required])
           updater.update_setting(:invite_only, updater.fields[:invite_only])
           updater.update_setting(:must_approve_users, updater.fields[:must_approve_users])
+          updater.update_setting(:chat_enabled, updater.fields[:chat_enabled]) if defined?(::Chat)
+          updater.update_setting(:navigation_menu, updater.fields[:enable_sidebar])
         end
       end