VisionOS: FileProviderUI not supported?

Hello folks,

While the API for FileProviderUI is listed as supporting VisionOS 1.0, Xcode Cloud complains at the first step of the build with:

"Unsupported Platform. The extension bundle LaTerminal.app/PlugIns/LaTerminalFileProviderUI.appex is not supported for this platform. Please refer to the App Extension Programming Guide at http://developer.apple.com."

I also noticed that while you can create a FileExtension from Xcode, there is no template for creating the FileExtensionUI on Xcode for VisionOS projects.

Could use some guidance as to what I could be doing wrong.