It looks like there was no direct reference to setting the default graph layout to "Dependency grid" in the Prefect documentation or Github issues.
However, you can explore the Prefect UI to see if there is an option to set the default graph layout. Often, these settings are user-specific and can be found in the configuration or settings sections of the UI.
For more specific and up-to-date instructions, you might want to check the
official Prefect documentation or reach out to the Prefect community on their
Discourse forum or
Slack channel.
If you need further assistance, feel free to ask!