appkit.NSModalResponses values appear undefined

I was attempting to use the file-picker based on

https://github.com/tmc/apple/blob/872b4b8c75cb24617d606e0484c1db1e2948f01e/examples/appkit/file-picker/main.go

The example doesn't seem to work though and always returns Cancelled

Poking a little by adding some logging

		response := panel.RunModal()

		log.Println("response", response)
		log.Println("ok", appkit.NSModalResponses.OK)
		log.Println("continue", appkit.NSModalResponses.Continue)
		log.Println("cancel", appkit.NSModalResponses.Cancel)
		log.Println("stop", appkit.NSModalResponses.Stop)

I receive

2026/09/10 15:28:25 response 1
2026/09/10 15:28:25 ok 0
2026/09/10 15:28:25 continue 0
2026/09/10 15:28:25 cancel 0
2026/09/10 15:28:25 stop 0

It would appear appkit.NSModalResponses.* constants never actually get populated with values and just return 0

https://github.com/tmc/apple/blob/872b4b8c75cb24617d606e0484c1db1e2948f01e/appkit/global_vars.gen.go#L18126-L18137

Start with the file-picker example in examples/appkit/file-picker/main.go and the generated values in appkit/global_vars.gen.go around the referenced lines. Run the example and inspect how NSModalResponses values are populated or exposed. Done means the response constants have usable values and the example can distinguish a successful selection from cancellation.