Improve "setText" method performance for large content

When displaying large amounts of HTML content using the setText method, loading times may increase due to in-memory handling. Equo Chromium provides a system property that can improve performance by saving to a local file and treating the content as a local file reference. Enabling this property optimizes setText by loading the HTML content through a local file: URL instead of passing it directly as a string. This can result in better performance for large HTML resources.