Just coming back to confirm that the following setting resolved the issue where the app wouldn't run on other machines:

<WindowsAppSdkDeploymentManagerInitialize>false</WindowsAppSdkDeploymentManagerInitialize>

Reference: GitHub comment

I’d like to ask:
Is it safe to keep this configuration long-term?
Could it cause any issues with future updates of .NET MAUI, Windows App SDK, or when publishing to platforms like the Microsoft Store?

Thanks again for the support!