createUiDefinition.json file not working in Create UI Definition Sandbox

I'm following the [How to deploy a CycleCloud Workspace for Slurm environment using the CLI](https://learn.microsoft.com/en-us/azure/cyclecloud/how-to/ccws/deploy-with-cli). On the fifth bullet point, when I click **Preview** after pasting the content of the UI definition file (`createUiDefinition.json`) from this repo (release "2025.04.24") into the text box on the [Create UI Definition Sandbox](https://portal.azure.com/#view/Microsoft_Azure_CreateUIDef/SandboxBlade) page, I get the following error:

> Template deployment does not support ARM API and Graph API controls in UX configuration.

This error message did not show until recently.

Start with createUiDefinition.json from the repository release 2025.04.24 and reproduce the fifth step in the Create UI Definition Sandbox using the linked deployment guide. Investigate the reported ARM API and Graph API controls error; done means the file can be previewed in the sandbox without that error.

Written by the indexing model from the issue text.