fix: missing keywords: :records, :associations for single_record

[JayeshPattern]

ActiveRecord::Associations::Preloader.new(records: payload, associations: associations).call
From rails 7, it expects payload to be an array.

[Copilot]

Pull Request Overview

This pull request fixes the handling of payloads for ActiveRecord::Associations by ensuring that the payload is always an array, which is required in Rails 7. The changes include:

• Using a ternary operator to conditionally return a single record in execute_query.
• Wrapping @results in an array for load_associations and preload_associations.
• Unifying the handling of single versus multiple results across association methods.