DEV: Change enable_admin_sidebar_navigation to group setting (#25159)

This will make it easier to do more focused
testing of this change.

db/post_migrate/20240108022138_change_enable_admin_sidebar_to_group_post_migration.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class ChangeEnableAdminSidebarToGroupPostMigration < ActiveRecord::Migration[7.0]
+  def change
+    enable_admin_sidebar_navigation_raw =
+      DB.query_single(
+        "SELECT value FROM site_settings WHERE name = 'enable_admin_sidebar_navigation'",
+      ).first
+
+    if enable_admin_sidebar_navigation_raw.present?
+      DB.exec(
+        "INSERT INTO site_settings(name, value, data_type, created_at, updated_at)
+        VALUES('admin_sidebar_enabled_groups', :setting, '20', NOW(), NOW())",
+        setting: "1", # 1 is the Group::AUTO_GROUPS[:admins] group id
+      )
+    end
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end